What does inch grass calligraphy mean?

Shi Deren, pen name Cuncao, member of China Calligraphers Association, director of China Calligraphers Association, professor of training center of Anhui Calligraphers Association, member of Anhui Artists Association, member of China Poetry Society, national first-class martial arts coach, and the 33rd generation lay disciple of Shaolin Temple. His paintings and calligraphy works have won the Stars Award of the Ministry of Culture and the Nomination Award of the 7th Youth Exhibition. His works also won the grand prize in Lanting Exhibition, Excellent Works Exhibition of China Book Association, Fan Art Exhibition and the First National Huangshan Cup Painting and Calligraphy Exhibition, and were exhibited in Japan, Taiwan Province Province and Singapore.