Who wrote it when I was in Ma Chenggong?

Ma Daocheng's calligraphy was written by Qian Chengshan.

Ma Ying (left) visited Qian Chengshan (second from right), former secretary-general of the Taiwan Federation, and Qian Chengshan presented Ma Ying with the calligraphy of "Success from Horse" on the spot (ninth). Qian Chengshan said that this is spiritual encouragement.