As far as the content is concerned, the recited classics include The Calculations of the Eastern Dou, The Feast of the Core Monument of Beidou's Life, The Longevity of the Core Monument of Beidou's Life, The Six Life-prolonging and Benevolent Classics of Nandou, The Heart Classics of Doumu's Feast of Life, and so on. Formally speaking, there are general instruments and lamps. In The Romance of the Three Kingdoms, Zhuge Liang was seriously ill and arranged his own oil lamp, not wanting to be trampled out by Wei Yan. The result was out of control and died in the army. Although this is a novel, there is a social prototype, that is, the people often ask Taoist priests to perform life-prolonging lanterns. There are Nandou longevity lamp instrument and Beidou longevity lamp instrument, the core monument of Beidou's life, both of which are related disciplines.
The life extension instrument adapts to people's psychology of praying for a long life, good health and safe life, and is a routine ceremony for folk believers. China people love life, especially cherish it. The ancient book Hong Fan mentioned that there are five kinds of happiness, the first is longevity. Therefore, Sun Simiao, a famous Taoist priest in the Tang Dynasty and a famous doctor in ancient China, said in Five Blessingg that "longevity is the most important thing". The spirit of Taoism is life-oriented. As a precious religion, she has a set of methods to pursue immortality, including various rituals to prolong life, which has a great influence on the people. Therefore, when people are old or unwell, they all think of this stunt of Taoism and ask the Taoist to help themselves or their relatives.
Nowadays, after decades of social unrest, it is people's beautiful hope and pursuit to be calm, pray for physical safety, health and longevity, and eliminate all kinds of illnesses. Believers in Taoism often attach importance to delaying healthy birth. Generally speaking, there are two kinds of beatings. One is to go to the Taoist temple to beat you when you are sick or feel old and weak; One is to invite a Taoist priest to play on your birthday. Due to the accelerated pace of contemporary life, the life extension instrument is also slightly simplified, and the chances of holding it in the city are relatively reduced, so it is not convenient to hold it in the evening of the city. Some people are still making extended lanterns, but they just move the time to the daytime.