1, annular domain
[huán yù]？
Refers to the boundary of Beidou. Legend of Gu Liang Fourteen Years of Wengong: "In autumn and July, a star enters the Beidou. It's still a shame to say what you said. He said,' When you enter the Beidou, there is a ring in the bucket.' Fan Ning's note: "It is said that Yu and the East didn't say anything, and those who said this would be infighting, disciplined and would join them." "Hanshu Wuxing Xia": "Liu Xin thought that Beidou had a ring domain and four stars entered it."
2. Cylindrical ring
[tǒng huán]？
Jewelry name. An earring worn by ethnic minorities in southwest China in ancient times. Song Zhu Fu's "Xi Man Cong Xiao Guan Huan": "Liao's wife and daughter, fifteen or sixteen years old, knocked out the right upper tooth, surrounded by bamboo five inches long and three inches long, and wrapped her ears in tin, which is called a tube ring."
3. Cyclic polymerization
[Huán jáu]？
Get together and reunite. "Song Shi Wen Yuan III Biography Lu Zhen": "Many people call Wen Zhen Guan, and there is no strategy to defend the war, so they gather and cry." For the first time in Wonders Seen in Twenty Years: "If you add fireworks from all over the world, you will find that there are as many wealthy businessmen in Shanghai. You can buy them at one time and gather in Sima Road, which is dazzling in Zhang Yan." Kang Youwei's Speech of Shaanxi Confucianism: "If we meet today, you will get together."
4. Environment?
[Hu Anjie]
Surrounding places and things: do a good job in hygiene.
Situation and conditions: objective transformation.