Agree with the upstairs statement: the collection of calligraphy and painting must first be recognized by the market. Only when you like it can you collect it. Only when it is recognized can it be valuable. It is purely based on how much it is worth. If it is artificially fried, it is a hot potato. It is best to use your own eyes (low eyes before, normal tuition), with an appreciation mentality and
Individualized aesthetic principles should be carefully collected (homogeneity is too high, and things without theme characteristics have no artistic value)