Nowadays tencent QQ online is the most popular online chat software, many of my classmates were using QQ, almost all my classmates have QQ number.

现在腾讯QQ是网上最流行的网上聊天软件，我的许多同学都在用QQ，几乎每个同学都有QQ号。

youdao

You are probably afraid of missing comments from your friends on QQ, WeChat and so on, so you have to make sure that you are always online.

你可能害怕在 QQ、微信等软件上错过朋友的评论，所以你必须确保你总是在线。

youdao

And if estimates are true, QQ has the world's largest online community with more than 600 million users.

如果估计正确的话，QQ是这个世界上最大的在线社区，拥有6亿用户。

youdao

According to Tencent, whose services include instant messaging service QQ, microblogging site Tencent Weibo - which is similar to Twitter - and online games, WeChat has close to 300 million users.

BBC: Tencent