Gu Yong studied under Cai Yong's calligraphy.
Gu Yong studied piano and calligraphy with the famous scholar Cai Yong when he was a child. He is witty, quiet and single-minded, and his artistic career is flourishing, which is deeply loved by Cai Yong. Cai Yong gave it a name. Therefore, Gu Yong and his teacher Cai Yong have the same name ("Yong" is the same as Cai Yong's "Yong"). Because of being praised by the teacher, I chose the word exclamation.