You must refer to the introductory book for cultivating Taoism-------Original title: "The Patriarch Lu Chunyang's Book of Seven Truths existed in the old days. Unfortunately, the text is not enough to express the words, and the interest is not enough to support its reasoning, which makes the viewer afraid of lying down while listening. It is left on the desk all year round without being read, and everyone regards it as a written document. Every time I want to revive it, I can't do it. Yesterday, I returned to Shu from Qin, and fell into the Prime Minister's Ancestral Hall, where I meditated and pondered for seven years. The true things were kept in detail, and he drafted them all day long, and compiled them into a book called "Seven True Causes and Effects". He used popular language to attract stupid people, used sins and blessings to enlighten people, and enlightened future generations with Taoism. The Taoist princes were pleased with it, and he asked me to confirm it. I wanted to publish it on a Tibetan plate. Qing·Huang Yongliang
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