What is the reason why Jie Jin's calligraphy belongs to "Taige Style"?

Jie Jin's calligraphy had a great influence in Yongle period. Wu Kuan's "Bachelor's Interpretation" said: "In Yongle, there were many books, and the bachelor's interpretation should be the first." His calligraphy is characterized by regular script and big grass. His regular script is graceful and elegant, but with few bones, which basically belongs to "Taige style", which is not unrelated to the court demand at that time.