Hello, don't write QQ. First of all, some companies don't use QQ for office work. They have RTX in it, so they may use email or MSN for external use. Secondly, in terms of time, why do others add you QQ? chat

If you are accepted, you will make phone calls and send emails. If you are not accepted, you will have nothing.

I'm not making friends, so I can't write QQ. Resume, very formal thing, don't write it.