Because there is something wrong with the ink in calligraphy itself, do I have to pay for the ink when mounting it?

This is a typical blackmail. If he comes again, he will call 1 10. If the author is only a member of the city book association, it can be said that it is very worthless. If the handwriting is not very good, it won't sell at all. But this guy is really a rogue, but obviously blackmail is coming, and it is difficult for business people to deal with such people. If you are a Jianghu person, it is very convenient to deal with such scoundrels: just like those guys like Zhenkansai and Niu Er, you should give them a good beating (don't kill them now in a society ruled by law)!