diff --git a/README.md b/README.md
index a444b12..1d91d8d 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ npm install try-flatten
 
 ## 在线试用
 
-[Playground Link](https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAbzjKBPAYgGwIYxgUwDs4BfOAMyghDgHIVUBacnPI2gbgCgv8APSLAoBXQgGMYwCMWwBnWflgA5YZkwAKAG7ZMw-AC44hVZgCUiLnDhR8MYVGLbd+OAF53Rk9xI9+g+OSiElIy8oowAKqEACb45MCE+NFaOnqGorHxidHmCJbWtvaOqS7urnAZcQlJ3r4C0AFBktJwcgqwAKJQVFApzoZdPbn5NnYOcE56cABk0xMlcAmyMNji+BDkcIPQtbz1QoHizaHtMCogAEaKfWmel4rDVqNFyKhg65uTpR60xvdQnC4Pj2-hERxCyHwy3UhGwIAMcGWUASAHMADSQ5YAYTkCPU5lcAD5WoRUI84GJpLIIJh8AA6TAQFHqehQySEFF0rm0DGw+GmbhWAjY3H43bCmAswAwKoBTa0Av4qAB1MeXB8W5iXkrJTCMs4ABtRRQDE2WQAXTcyDQWFwBEI6lVRLgAEYBTwrMBNuoDeSrG1wttel7BVZWmFYFFMtVksaXVYyPhMAoLMGQ6cVGpPd0Y8HfcphP91NGgz4SC6uBKWYA9tUAwDGK5VyVDiFUE9X5TVU+BiHSYC7YMQAa3QTQh5XUnbUPf7hgzUAG3WgcAAPp41EaoYY-lcoM2JhBgDk1Unk4jbAAVUDrYSS+0to-Bsfd3t9mEmDHOoPJkvv0hfrU6-XdVdTXNbAAHdsGAeAGCtNhbXvCcByHaRS2Td0VS9Q9kxzGB-WnLNMNDSIYiqbICyhPDSDgeNEw1I8sLTDRA1bbMCPOTdSNkcifFjZDMUlWgAAUqBAYAFAAGWAPt8DrWQGzEJsDxotttXgf9DQKIDylA8DIMtVgbXUQTqBE+ljRpTR8HUZ0eLdD10MU5jThwxjbyw8NiKSdjOMohMXHsn0WJMXCv381M8zYwsmK40gXSAA)
+[Playground Link](https://www.typescriptlang.org/zh/play?#code/JYWwDg9gTgLgBAbzjKBPAYgGwIYxgUwDs4BfOAMyghDgHIVUBacnPI2gbgCgv8APSLAoBXQgGMYwCMWwBnWflgA5YZkwAKAG7ZMw-AC44hVZgCUiLnDhR8MYVGLbd+OAF53Rk9xI9+g+OSiElIy8oowAKqEACb45MCE+NFaOnqGorHxidHmCJbWtvaOqS7urnAZcQlJ3r4C0AFBktJwcgqwAKJQVFApzoZdPbn5NnYOcE56cABk0xMlcAmyMNji+BDkcIPQtbz1QoHizaHtMCogAEaKfWmel4rDVqNFyKhg65uTpR60xvdQnC4Pj2-hERxCyHwy3UhGwIAMcGWUASAHMADSQ5YAYTkCPU5lcAD5WoRUI84GJpLIIJh8AA6TAQFHqehQySEFF0rm0DGw+GmbhWAjY3H43bCmAswAwKoBTa0Av4qAB1MeXB8W5iXkrJTCMs4ABtRRQDE2WQAXTcyDQWFwBEI6lVRLgAEYBTwrMBNuoDeSrG1wttel7BVZWmFYFFMtVksaXVYyPhMAoLMGQ6cVGpPd0Y8HfcphP91NGgz4SC6uBKWYA9tUAwDGK5VyVDiFUE9X5LU6sQ6TAXbBiADW6CaEPK6g7am7fcMGagA260DgAB9PGojVDDH8rlBmxMIMAcmqk8GFDAACqgdbCSX2lvJzWd8e9mEmDHOoOxrMkINt+D67or03m7AAHdsGAeAGCtNhbVHLse37QdpFLN0PS9A8fVDGB-SnLM0NOcMqmyAsoXfOB40TDVs3QtMNEDfIcPCc4N0I2R3yBUty1oAAFKgQGABQABlgF7fA61kBsxCbfdyK-PUDT-M1yiAkCwMtVgbXULjqF4+ljRpTR8HUZ1EMWZDM1QlM-VnANM1fcywxifCkiY4jSJcci6NzdMaOTHMzjzRjC3yYsXSAA)
 
 # 对同步函数的 try-flatten