My colleague invited me to dinner on my birthday and gave me a red envelope. Should I?

I don't think you should give it. This colleague eats a little ugly.

First of all, it's just a birthday, not a wedding and other life events. As colleagues, there is no obligation to give gifts. It's just that you are willing to send it if you have a good relationship, but this colleague didn't invite you to dinner, just didn't take you seriously. How dare he let you send a red envelope? If other colleagues are also asked by TA to give red envelopes, it is estimated that this behavior of TA has offended a large group of people.

Therefore, unless this person has any background, and you don't give him a red envelope for fear of offending TA, I think we should ignore this unreasonable request. If a person like TA has no background, it is estimated that he won't be able to mix in the workplace for long.