First talk about the elder’s main functions and responsibilities during work, and then talk about your boyfriend’s growth from childhood to adulthood.
If you talk about these things, the old man will talk endlessly and may not be able to hold back. It doesn't matter, just be a spectator. Listen carefully, this is the thing that the old man is most proud of.
If an old man asks you about your family, he must tell you the truth. If you live in the same city, maybe someone has asked someone to ask about the situation in your home. Maybe this is also a 'confirmation' of what they heard, who knows.
While talking, adding some hot water to the old man’s teacup, handing over an ashtray, etc. will make the atmosphere harmonious.
If you can’t afford a marriage certificate, you can’t spend the night at your boyfriend’s house. The elderly are very taboo about such things. That kind of scene will be the most embarrassing moment for the elderly.
Everything is decent and generous. The old man liked it.
Remember not to be coy. He was unwilling to answer any questions, as if he was an old man in trouble.
The old man will be happy if he answers all questions.