xīn jìn wēixìn qún shí, xiān kàn qún gōnggào hé qún míng, bùyào mǎshàng wèn "zhège qún shì gànshénme de"

新进微信群时，先看群公告和群名，不要马上问“这个群是干什么的”。

When you first join a WeChat group, check the group announcement and name first; don't immediately ask, "What is this group for?"