I think both of them have their own merits.
But at the same time, because Tian has profound research on brush and hard-pen calligraphy, and especially accumulated rich experience in calligraphy practice, he is a master of Chinese European style research. Qie Tian's hard-stroke calligraphy is elegant and flying, and the stipples are exquisite and well-proportioned. It is more suitable for girls who are elegant and extroverted to learn.