What is the origin of Cai Jing's study of calligraphy?

For Cai Jing's calligraphy, Cai Taize commented that "he started with brushwork, learned from Xu Jihai, and soon abandoned it and learned from it". I am tired of carrying on the family line and obeying Ouyang's command, so I am vigorous and happy. Almost Shao Sheng, the number of books is chinese odyssey. Later, he was even more disgusted. He was the second king of Shenfa. Every night, he lamented that the army of the son of heaven was hard to reach and said it was far from his father. Therefore, it is a law of its own, and this is the case in the sea. "This passage makes the origin of Cai Jing's study of calligraphy very clear, but it is obviously exaggerated.