Zhang Cheng At the end of 1989, he successfully invented the "Zhang Cheng quick method of running calligraphy with fountain pen". This method abandons the traditional copying method of calligraphy and changes passive imitation to active thinking. It uses 16 similar parts and 2 simple structural formulas to solve all writing problems of running Chinese characters. After more than 30 hours of study, students can Can write standard pen calligraphy.