(1) thatched cottage. Often refers to a humble hut where hermits live. Such as Yuewei Caotang and Du Fu Caotang.

Sir, please enter the thatched cottage and sit down less. My father will arrive soon. -Feng Ming's "The Legend of the Dream Dragon in the Eastern Zhou Dynasty"

② Scholar's learning and palace architecture.

(3) the Northern Song Dynasty Buddhist Zen monk Yunmen. Founder of Zen Buddhism in Vietnam Caotang. The year of birth and death and surname are unknown. 1 1 From the middle of the century to Champo (now central Vietnam), Buddhism spread widely. 1009 Li shengzong, king of the Li dynasty in Vietnam, conquered Zhanpo, and the thatched cottage was captured to Shenglong (now Hanoi). Li Shengzong discovered that he was a Zen master in China, and he was proficient in Buddhism. He should be responsive, pay more attention, make him a Buddhist, and give him a place in Shenglong Guo Kai Temple. Then he died in the local area.

Xuedou disciple Caotang, a famous monk in Yunmen, inherited the reappearance of the legal system and founded Caotang Zen, also known as Xuedou Mingjue School, which mainly preached the hundred rules of Xuedou and advocated the unity of Zen, that is, the unity of meditation and pure land Sect. The monks in the thatched cottage were deeply supported by the royal family and ministers of the Li Dynasty. Li Shengzong, Ying Zong and Gao Zong, as well as Du Wu and Du Chang, are all disciples of the Buddhist monk in Caotang.