Some people say that Tian Kaizi is writing rather than calligraphy, that Tian Kaizi lacks spirituality, is dull and has no aesthetic feeling, and so on. All these words were said by someone who stepped on Kuroda. Don't believe them all. But then again, I didn't say that Tian Jie was "calligraphy" for two days! Even if Tian Jie is a character, there is a "law". My point is, if you like Tian Kai characters, you should study decisively and don't be disturbed by anyone. If you don't like Tian Jie characters, choose your favorite characters or calligraphy to learn, and don't force yourself. Love is the best teacher.