Still have to start with Yang Lvchan-Yang Taijichuan's biography that "learning from Chen Gou and Chen Changxing, getting a punch from Zhao Qingping".
Chen Changxing was a disciple of Jiang Fa, and Jiang Fa in the late Ming Dynasty and Jiang Fa in the Qianlong period were both related to Chenjiagou-Jiang Fa in the late Ming Dynasty was the ancestor of Zhaobao Taiji Biography, Zhaobao Taiji Biography was the ancestor, and Wudang Mountain was related to Chengou; If Jiang Fa was in Qianlong period, according to "Preface to Chen Changxing", he was still a disciple of Wang Zongyue, and Wang Zongyue was also a disciple of Wu Tangmen's Neijiaquan. So Wudang Wushu has something to do with Chenjiagou Chen Changxing and Chenjiagou Boxing.
In boxing, martial arts spread in Wudang Mountain before the Ming Dynasty. Wudang Hongquan is said to have been created by Song Taizu Zhao Kuangyin. Among them, the Kansai frame is mainly feminine and round, and the Kanto frame is mainly masculine and stiff. Its boxing theory is based on Huang Lao's theory, emphasizing the combination of yin and yang, keeping soft and strong, and coming first. Does this look like Tai Ji Chuan in Chenjiagou? Moreover, the biography of Chen Taiji created by Chen Changxing was adapted from Tongbei Boxing, but in the Yuan Dynasty, Zhang Sanfeng created the early boxing "Tongbei Boxing". Later, Tongbei Boxing was divided into several branches, one of which was Chenjiagou's Tongbei Boxing.
In this way, Chenjiagou's boxing is related to Wudang Wushu.