Kim who knows Vietnamese.

2. Crying, equivalent to our 55555.

3: oc.oc means fierce,

4. Hee hee hee, laughter

5: G9 Good night. Good night,

Believe me, I just came back from studying in Vietnam for a year. These are the things that young people over there prefer to say when chatting.

I hope my answer is helpful to you.

Some computers over there don't support displaying Chinese. .

We write letters to our friends in Pinyin on the Internet. There is also a mobile phone that does not support displaying Chinese, and it is garbled by ggyy when it is sent. .

You'd better ask your friend before sending it. .