diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e5866be..76abb63 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
         run: chmod +x gradlew
 
       - name: Build with Gradle
-        run: ./gradlew build
+        run: ./gradlew assembleRelease
 
       - name: Publish Release
         uses: softprops/action-gh-release@v1
diff --git a/app/src/main/kotlin/com/zjutjh/ijh/ui/component/CampusCardInfoCard.kt b/app/src/main/kotlin/com/zjutjh/ijh/ui/component/CampusCardInfoCard.kt
index c29dc91..f03073a 100644
--- a/app/src/main/kotlin/com/zjutjh/ijh/ui/component/CampusCardInfoCard.kt
+++ b/app/src/main/kotlin/com/zjutjh/ijh/ui/component/CampusCardInfoCard.kt
@@ -21,18 +21,19 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import com.zjutjh.ijh.R
 import com.zjutjh.ijh.ui.theme.IJhTheme
+import com.zjutjh.ijh.util.LoadResult
 import com.zjutjh.ijh.util.toLocalizedString
 import java.time.Duration
 
 @Composable
 fun CampusCardInfoCard(
     modifier: Modifier = Modifier,
-    balance: String?,
-    lastSyncDuration: Duration?
+    balance: LoadResult<String?>,
+    lastSync: LoadResult<Duration?>,
 ) {
     val context = LocalContext.current
-    val subtitle = remember(lastSyncDuration) {
-        prompt(context, lastSyncDuration)
+    val subtitle = remember(lastSync) {
+        prompt(context, lastSync)
     }
 
     GlanceCard(
@@ -50,7 +51,7 @@ fun CampusCardInfoCard(
             label = "Loading",
         ) {
             when (it) {
-                null -> Column(
+                is LoadResult.Loading -> Column(
                     horizontalAlignment = Alignment.CenterHorizontally
                 ) {
                     CircularProgressIndicator()
@@ -60,11 +61,17 @@ fun CampusCardInfoCard(
                     )
                 }
 
-                else -> {
+                is LoadResult.Ready -> {
+                    val text = if (it.data == null) {
+                        "N/A"
+                    } else {
+                        "¥${it.data}"
+                    }
+
                     Text(
                         modifier = Modifier.padding(vertical = 8.dp),
                         color = MaterialTheme.colorScheme.primary,
-                        text = "¥$it",
+                        text = text,
                         style = MaterialTheme.typography.displaySmall,
                         textAlign = TextAlign.Center,
                         maxLines = 1,
@@ -75,15 +82,21 @@ fun CampusCardInfoCard(
     }
 }
 
-private fun prompt(context: Context, lastSyncDuration: Duration?) =
+private fun prompt(context: Context, lastSyncDuration: LoadResult<Duration?>) =
     buildString {
         val separator = " • "
         append(context.getString(R.string.balance))
         append(separator)
-        if (lastSyncDuration != null) {
-            append(lastSyncDuration.toLocalizedString(context))
-        } else {
-            append(context.getString(R.string.never))
+        when (lastSyncDuration) {
+            is LoadResult.Loading -> append(context.getString(R.string.unknown))
+            is LoadResult.Ready -> {
+                val duration = lastSyncDuration.data
+                if (duration != null) {
+                    append(duration.toLocalizedString(context))
+                } else {
+                    append(context.getString(R.string.never))
+                }
+            }
         }
     }
 
@@ -92,7 +105,10 @@ private fun prompt(context: Context, lastSyncDuration: Duration?) =
 @Composable
 private fun CampusCardInfoCardPreview() {
     IJhTheme {
-        CampusCardInfoCard(balance = "123", lastSyncDuration = Duration.ofDays(1))
+        CampusCardInfoCard(
+            balance = LoadResult.Ready("123"),
+            lastSync = LoadResult.Ready(Duration.ofSeconds(10))
+        )
     }
 }
 
@@ -100,6 +116,6 @@ private fun CampusCardInfoCardPreview() {
 @Composable
 private fun CampusCardInfoCardPreviewEmpty() {
     IJhTheme {
-        CampusCardInfoCard(balance = null, lastSyncDuration = null)
+        CampusCardInfoCard(balance = LoadResult.Loading, lastSync = LoadResult.Loading)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/com/zjutjh/ijh/ui/component/ScheduleCard.kt b/app/src/main/kotlin/com/zjutjh/ijh/ui/component/ScheduleCard.kt
index 979b55b..8d3dd4e 100644
--- a/app/src/main/kotlin/com/zjutjh/ijh/ui/component/ScheduleCard.kt
+++ b/app/src/main/kotlin/com/zjutjh/ijh/ui/component/ScheduleCard.kt
@@ -50,13 +50,13 @@ fun ScheduleCard(
     modifier: Modifier = Modifier,
     courses: List<Course>?,
     termDay: TermDayState?,
-    lastSyncDuration: Duration?,
+    lastSync: Duration?,
     onButtonClick: () -> Unit,
 ) {
     val context = LocalContext.current
 
-    val subtitle = remember(termDay, lastSyncDuration) {
-        prompt(context, termDay, lastSyncDuration)
+    val subtitle = remember(termDay, lastSync) {
+        prompt(context, termDay, lastSync)
     }
 
     GlanceCard(
@@ -226,7 +226,7 @@ private fun ScheduleSurfacePreview() {
                 courses = CourseRepositoryMock.getCourses(),
                 onButtonClick = {},
                 termDay = termDay,
-                lastSyncDuration = Duration.ofDays(2),
+                lastSync = Duration.ofDays(2),
             )
         }
     }
@@ -242,7 +242,7 @@ private fun ScheduleSurfaceEmptyPreview() {
                 courses = emptyList(),
                 onButtonClick = {},
                 termDay = null,
-                lastSyncDuration = Duration.ofDays(1),
+                lastSync = Duration.ofDays(1),
             )
         }
     }
@@ -258,7 +258,7 @@ private fun ScheduleSurfaceLoadingPreview() {
                 courses = null,
                 onButtonClick = {},
                 termDay = null,
-                lastSyncDuration = Duration.ofDays(1),
+                lastSync = Duration.ofDays(1),
             )
         }
     }
diff --git a/app/src/main/kotlin/com/zjutjh/ijh/ui/screen/HomeScreen.kt b/app/src/main/kotlin/com/zjutjh/ijh/ui/screen/HomeScreen.kt
index af99ac9..5d662db 100644
--- a/app/src/main/kotlin/com/zjutjh/ijh/ui/screen/HomeScreen.kt
+++ b/app/src/main/kotlin/com/zjutjh/ijh/ui/screen/HomeScreen.kt
@@ -78,6 +78,7 @@ fun HomeRoute(
     val termDayState by viewModel.termDayState.collectAsStateWithLifecycle()
     val coursesLastSyncState by viewModel.courseLastSyncState.collectAsStateWithLifecycle()
     val cardBalanceState by viewModel.cardBalanceState.collectAsStateWithLifecycle()
+    val cardBalanceLastSyncState by viewModel.cardBalanceLastSyncState.collectAsStateWithLifecycle()
 
     val isLoggedIn = when (loginState) {
         null -> false
@@ -99,8 +100,9 @@ fun HomeRoute(
         isLoggedIn = isLoggedIn,
         courses = courses,
         termDay = termDay,
-        coursesLastSyncDuration = coursesLastSyncState,
+        coursesLastSync = coursesLastSyncState,
         cardBalance = cardBalanceState,
+        cardBalanceLastSync = cardBalanceLastSyncState,
         onRefresh = viewModel::refreshAll,
         onNavigateToLogin = onNavigateToLogin,
         onNavigateToProfile = onNavigateToProfile,
@@ -115,8 +117,9 @@ private fun HomeScreen(
     isLoggedIn: Boolean?,
     courses: List<Course>?,
     termDay: TermDayState?,
-    coursesLastSyncDuration: Duration?,
-    cardBalance: Pair<String, Duration>?,
+    coursesLastSync: Duration?,
+    cardBalance: LoadResult<String?>,
+    cardBalanceLastSync: LoadResult<Duration?>,
     onRefresh: () -> Unit,
     onNavigateToLogin: () -> Unit,
     onNavigateToProfile: () -> Unit,
@@ -151,12 +154,12 @@ private fun HomeScreen(
                 courses = courses,
                 termDay = termDay,
                 onButtonClick = onNavigateToCalendar,
-                lastSyncDuration = coursesLastSyncDuration,
+                lastSync = coursesLastSync,
             )
             CampusCardInfoCard(
                 modifier = modifier,
-                balance = cardBalance?.first,
-                lastSyncDuration = cardBalance?.second
+                balance = cardBalance,
+                lastSync = cardBalanceLastSync,
             )
         }
 
@@ -350,8 +353,9 @@ private fun HomeScreenPreview() {
             isLoggedIn = true,
             courses = courses,
             termDay = termDay,
-            coursesLastSyncDuration = Duration.ofDays(1),
-            cardBalance = "123" to Duration.ofDays(2),
+            coursesLastSync = Duration.ofDays(1),
+            cardBalance = LoadResult.Ready("123"),
+            cardBalanceLastSync = LoadResult.Ready(Duration.ofDays(2)),
             onRefresh = ::emptyFun,
             onNavigateToAbout = ::emptyFun,
             onNavigateToCalendar = ::emptyFun,
diff --git a/app/src/main/kotlin/com/zjutjh/ijh/ui/viewmodel/HomeViewModel.kt b/app/src/main/kotlin/com/zjutjh/ijh/ui/viewmodel/HomeViewModel.kt
index bf4f753..7876db3 100644
--- a/app/src/main/kotlin/com/zjutjh/ijh/ui/viewmodel/HomeViewModel.kt
+++ b/app/src/main/kotlin/com/zjutjh/ijh/ui/viewmodel/HomeViewModel.kt
@@ -42,9 +42,7 @@ class HomeViewModel @Inject constructor(
         .distinctUntilChanged()
         .combine(timerFlow) { t1, _ -> t1 }
         .map {
-            if (it == null) null else {
-                Duration.between(it, ZonedDateTime.now())
-            }
+            it?.let { Duration.between(it, ZonedDateTime.now()) }
         }
         .flowOn(Dispatchers.Default)
         .stateIn(
@@ -73,7 +71,6 @@ class HomeViewModel @Inject constructor(
         .mapLatest {
             it?.toTermDayState()
         }
-        .flowOn(Dispatchers.Default)
         .asLoadResultStateFlow(
             scope = viewModelScope,
             started = SharingStarted.WhileSubscribed(),
@@ -91,27 +88,30 @@ class HomeViewModel @Inject constructor(
                 } else flowOf(emptyList())
             } else flowOf(emptyList())
         }
-        .flowOn(Dispatchers.Default)
         .asLoadResultStateFlow(
             scope = viewModelScope,
             started = SharingStarted.WhileSubscribed(5_000)
         )
 
-    val cardBalanceState: StateFlow<Pair<String, Duration>?> = cardInfoRepository.balanceStream
+    val cardBalanceState: StateFlow<LoadResult<String?>> = cardInfoRepository.balanceStream
         .distinctUntilChanged()
-        .combine(timerFlow) { t, _ -> t }
-        .map {
-            if (it == null) null else {
-                Pair(it.first, Duration.between(it.second, ZonedDateTime.now()))
-            }
-        }
-        .flowOn(Dispatchers.Default)
-        .stateIn(
+        .asLoadResultStateFlow(
             scope = viewModelScope,
             started = SharingStarted.WhileSubscribed(5_000),
-            initialValue = null
         )
 
+    val cardBalanceLastSyncState: StateFlow<LoadResult<Duration?>> =
+        cardInfoRepository.lastSyncTimeStream
+            .distinctUntilChanged()
+            .combine(timerFlow) { t1, _ -> t1 }
+            .map {
+                it?.let { Duration.between(it, ZonedDateTime.now()) }
+            }
+            .asLoadResultStateFlow(
+                scope = viewModelScope,
+                started = SharingStarted.WhileSubscribed(5_000)
+            )
+
     init {
         viewModelScope.launch(Dispatchers.Default) {
             // Check session state, renew if needed. TODO: move to application scope
@@ -131,7 +131,7 @@ class HomeViewModel @Inject constructor(
                     }
                 }
             }
-            // Subscribe latest login state, and trigger refresh.
+            //Subscribe latest login state, and trigger refresh.
             loginState.collectLatest {
                 refreshAll(this)
             }
@@ -155,19 +155,25 @@ class HomeViewModel @Inject constructor(
         _refreshState.update { true }
         val timer = scope.async { delay(300L) }
 
-        val term = refreshTerm()
-
         val isLoggedIn = loginState.value
-        if (isLoggedIn != null) {
-            if (term != null) {
-                refreshCourse(term.first, term.second)
+        val tasks = if (isLoggedIn != null) {
+            val task1 = scope.async {
+                val term = refreshTerm()
+                if (term != null) {
+                    refreshCourse(term.first, term.second)
+                }
             }
-            refreshCard()
+            val task2 = scope.async {
+                refreshCard()
+            }
+            mutableListOf(task1, task2)
+        } else {
+            mutableListOf()
         }
 
+        tasks.add(timer)
+        awaitAll(deferreds = tasks.toTypedArray())
         Log.i("Home", "Synchronization complete.")
-
-        timer.await()
         _refreshState.update { false }
     }
 
diff --git a/app/src/main/kotlin/com/zjutjh/ijh/util/LoadResult.kt b/app/src/main/kotlin/com/zjutjh/ijh/util/LoadResult.kt
index fe6fb48..7735ed8 100644
--- a/app/src/main/kotlin/com/zjutjh/ijh/util/LoadResult.kt
+++ b/app/src/main/kotlin/com/zjutjh/ijh/util/LoadResult.kt
@@ -1,15 +1,20 @@
 package com.zjutjh.ijh.util
 
+import androidx.compose.runtime.Stable
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.shareIn
 import kotlinx.coroutines.flow.stateIn
+import kotlin.coroutines.CoroutineContext
 
+@Stable
 sealed interface LoadResult<out T> {
     data object Loading : LoadResult<Nothing>
     class Ready<T>(val data: T) : LoadResult<T>
@@ -23,6 +28,12 @@ sealed interface LoadResult<out T> {
         if (this is Ready && v is Ready) {
             areEquivalent(this.data, v.data)
         } else this is Loading && v is Loading
+
+    fun <R> map(transform: (T) -> R): LoadResult<R> =
+        when (this) {
+            is Loading -> Loading
+            is Ready -> Ready(transform(data))
+        }
 }
 
 fun <T> LoadResult<T>.isLoading(): Boolean = this is LoadResult.Loading
@@ -36,6 +47,7 @@ fun <T> Flow<T>.asLoadResultFlow(): Flow<LoadResult<T>> = this
     .onStart { emit(LoadResult.Loading) }
 
 fun <T> Flow<T>.asLoadResultSharedFlow(
+    context: CoroutineContext = Dispatchers.Default,
     scope: CoroutineScope,
     started: SharingStarted
 ): SharedFlow<LoadResult<T>> = this
@@ -43,6 +55,7 @@ fun <T> Flow<T>.asLoadResultSharedFlow(
         LoadResult.Ready(it)
     }
     .onStart { emit(LoadResult.Loading) }
+    .flowOn(context)
     .shareIn(
         scope = scope,
         started = started,
@@ -51,12 +64,14 @@ fun <T> Flow<T>.asLoadResultSharedFlow(
 
 
 fun <T> Flow<T>.asLoadResultStateFlow(
+    context: CoroutineContext = Dispatchers.Default,
     scope: CoroutineScope,
     started: SharingStarted
 ): StateFlow<LoadResult<T>> = this
     .map<T, LoadResult<T>> {
         LoadResult.Ready(it)
     }
+    .flowOn(context)
     .stateIn(
         scope = scope,
         started = started,
diff --git a/core/data/src/main/kotlin/com/zjutjh/ijh/data/CardInfoRepository.kt b/core/data/src/main/kotlin/com/zjutjh/ijh/data/CardInfoRepository.kt
index 8aaf26d..2323420 100644
--- a/core/data/src/main/kotlin/com/zjutjh/ijh/data/CardInfoRepository.kt
+++ b/core/data/src/main/kotlin/com/zjutjh/ijh/data/CardInfoRepository.kt
@@ -8,9 +8,11 @@ import java.util.Date
 interface CardInfoRepository {
 
     /**
-     * [Pair]: balance (Unit: CNY) in string, last sync time
+     * balance (Unit: CNY) in string
      */
-    val balanceStream: Flow<Pair<String, ZonedDateTime>?>
+    val balanceStream: Flow<String?>
+
+    val lastSyncTimeStream: Flow<ZonedDateTime?>
 
     suspend fun sync()
 
diff --git a/core/data/src/main/kotlin/com/zjutjh/ijh/data/impl/CardInfoRepositoryImpl.kt b/core/data/src/main/kotlin/com/zjutjh/ijh/data/impl/CardInfoRepositoryImpl.kt
index 8d599b7..492e618 100644
--- a/core/data/src/main/kotlin/com/zjutjh/ijh/data/impl/CardInfoRepositoryImpl.kt
+++ b/core/data/src/main/kotlin/com/zjutjh/ijh/data/impl/CardInfoRepositoryImpl.kt
@@ -19,10 +19,12 @@ class CardInfoRepositoryImpl @Inject constructor(
     private val local: WeJhPreferenceDataSource
 ) : CardInfoRepository {
 
-    override val balanceStream: Flow<Pair<String, ZonedDateTime>?> = local.data.map {
-        it.cardOrNull?.let { card ->
-            Pair(card.balance, card.lastSyncTime.toZonedDateTime())
-        }
+    override val balanceStream: Flow<String?> = local.data.map {
+        it.cardOrNull?.balance
+    }
+
+    override val lastSyncTimeStream: Flow<ZonedDateTime?> = local.data.map {
+        it.cardOrNull?.lastSyncTime?.toZonedDateTime()
     }
 
     override suspend fun sync() {