On a side note, there is a Chinese Internet messaging software called QQ developed by Tencent (which later developed WeChat). it had hundreds of millions of use

On a side note, there is a Chinese Internet messaging software called QQ developed by Tencent (which later developed WeChat). it had hundreds of millions of users about 8 years ago, and it runs on multiple platforms, including Nokia, Android, etc. So the point is that it is not surprising for a similar app to be developed 5 years later by a small group of people. https://en.wikipedia.org/wiki/Tencent_QQ https://en.wikipedia.org/wiki/Tencent_QQ