Mr. Ma Dingxiang donated precious coin rubbings and collection coin exhibition. Mr. Ma Dingxiang is a famous late coin scientist in China. Ma Lao was born in Hangzhou in 1916. When he was young, he began to operate coins in Shanghai. He is one of the founders of China Quancoin Society. He exchanges with the elites of Quanjie and talks about Quanjie. Ma Lao loves spring studies and concentrates on the historical and cultural study of coins. He is proficient in ancient coins, gold and silver coins, copper coins and paper money. When he knows money, he often turns no exam into a test and identifies countless coins. He also pays great attention to the coin system development, tens of thousands of rubbings become precious materials for future generations to study coins.