All the apps from Tencent are removed from Apple store.

Search result of "WeChat" on apple store

Search result of “WeChat” on apple store

Search result of "qq" on apple store

Search result of “qq” on apple store

The other apps from Tencent removed this time include:
Social app:微信、QQ、陌陌…
Financial app:大智慧、涨了财付通…
Auto app:人人车、优信二手车、瓜子二手车、99好车…
Live show app:映客、水晶直播…

It’s estimated over 700 apps from Tencent are removed from Apple store.
Competition between Apple and Tencent on China app market is supposed to be the possible reason, as Tencent provides its own app store: android.myapp.com, which has already become the biggest app store for Android users in China.

And Tencent itself owns the most popular app in China: WeChat.
Fake downloading on Apple store in China is another possible trigger for the action on Apple store this time.

If you are using any apps from Tencent, be careful before deleting them which you could never find back again.