1. Different sects
1. Zen Buddhism aims at awakening the inherent Buddha nature of all beings.
2. Legalism: it is named after focusing on studying and spreading commandments.
3. Tantric Buddhism: Tantric Buddhism advocates becoming a Buddha immediately, and it is based on life and death.
Second, the founders are different
1. Zen: The founder is bodhidharma.
2. Law Sect: The founder is Daoxuan.
3. Tantric Sect: The founders are Subhakara simha, Jin Gangzhi and Bukong.
3. Different ancestral families
1. Zen Buddhism: Shaolin Temple in Henan, Erzu Temple in Yuexi, Anhui, Sanzu Temple in Tianzhu Mountain, Sizu Temple in Huangmei, Hubei, Wuzu Temple and Nanhua Temple in Guangdong, etc.
2. Law Sect: Jingyi Temple in Xi 'an, Shaanxi.
3. Tantric Sect: Daxing Temple in Xi 'an and Seiryuji; Dafeng Temple and Guanghua Temple in Luoyang.
Baidu Encyclopedia-Tantric Sect
Baidu Encyclopedia-Law Sect
Baidu Encyclopedia-Zen Buddhism.