What's the difference between collecting books and collecting antique calligraphy and painting?

I will! Ancient books also have a high appreciation space! But its appearance is very demanding! It's hard to get back! So there are fewer people who specialize in collecting ancient books! If you think you have a valuable collection, of course, I suggest you go to Beijing to find Ma Weidou! Can't mix well down there! Lao Zhang Manning, please don't move! Mata has a special day, public appreciation day! If you think it's not worth it, don't stop!