What's the name of Sun Donghai's grandfather?

Sun Daming. He is a calligrapher with profound cultural background. Sun Daming is the founder and chief calligrapher of the contemporary calligrapher Zhonglianshan School, and also the birthplace of Sun Donghai. Sun Donghai's grandfather, Sun Daming, is also a poet and landscape painter. He has won many outstanding achievements in the National Calligraphy Competition over the years.