[doc] Add a Chinese version for the documentation

[Waterkin]

Purpose

Linked issue: open #2708

Add a Chinese version for the documentation, while new Chinese files (stored in docs/content.zh) are still the same in English (stored in docs/content), needing further translation.

[JingsongLi]

Hi @Waterkin

Do not just copy all documentation files. We should do translation one by one.

[Waterkin]

Hi @JingsongLi

I've added an entrance to the new Chinese version at the sidebar, so people can simply focus on the translations of English content at docs/content.zh. For example, people can just revise these contents and submit a PR online, making translations more convenient. The convenience will make translation, which is a huge work, easier.

[JingsongLi]

Hi @JingsongLi

I've added an entrance to the new Chinese version at the sidebar, so people can simply focus on the translations of English content at docs/content.zh. For example, people can just revise these contents and submit a PR online, making translations more convenient. The convenience will make translation, which is a huge work, easier.

Do not copy without translation which makes maintenance very difficult, and the result is not yet any benefit.

[Waterkin]

@JingsongLi Do you think it ok that I delete the copyed files and only translate some of them?

[JingsongLi]

@JingsongLi Do you think it ok that I delete the copyed files and only translate some of them?

Yes, that is a better way.

[Waterkin]

@JingsongLi PTAL, thanks!

[JingsongLi]

Hi @Waterkin , very thanks for your contribution.

But it is really hard to maintain two documentation. It is recommended to use translator to read english documentation.