Do u know what it is? Well, different things in different cultures. it's an inkstone or inkslab. You probably know there is an art called calligraphy. By grinding inkbar, inkstone and water, the output ink is ready for calligraphy. So, that's why you see some water on the inkstone. The moss on the surface is the magic result of water or microorganism. Well, it also needs time. I tell you what. It is bought by my father in 1982. It's a miracle it's still in service. The reform in shanghai starts in 1990, but it's bought in 1982. Yes, it's a antique. My father still uses it to make practice on calligraphy everyday. #inkstone #inkslab #ink #calligraphy #inkbar #moss #mossy #writingbrush #chinesecalligraphy #history #antique #1982 #chineseculture #shanghai (at Shanghai Pudong)