Aphorisms: Famous aphorisms refer to famous words spoken, written, recorded in history, concluded or suggested through practice by some celebrities or ordinary people, as well as more famous words to warn the world. Famous aphorisms are easy to pass down and are the concentrated essence.

Well edge: refers to the edge of the well.

Jingyan: Place name. Jingyan County belongs to Leshan City, Sichuan Province. It is located in the southwest of the Sichuan Basin and is the eastern gateway of Leshan City. It is closely connected with Renshou, Qingshen, Rongxian, Qianwei, Wutongqiao, Shizhong District, etc. land bordering. Since the establishment of the county in 553 AD, the county covers an area of ??840.53 square kilometers, governs 27 towns, and has a population of approximately 420,000 (2013). Jingyan County has a typical medium to shallow hilly landform, with a maximum altitude of 697 meters and a minimum altitude of 344 meters. It belongs to the humid subtropical climate zone.

Well salt: The main salts used in the past dynasties are: sea salt, pool salt (lake salt), well salt, and rock salt (mineral salt). Sichuan well salt has a long history. According to documentary records and expert research, the world-famous Zhuotong Well in Daying County was founded during the Qingli period of the Northern Song Dynasty, more than 800 years earlier than in the West. "History of Chinese Drilling Technology", "History of Chinese Science and Technology", "History of Chinese Well Salt Science and Technology" and other books all call him "the father of the world's oil drilling" and "the pioneer of mechanical drilling."