1. Taishang Laojun Neiguan Classic
2. The Sutra of Taishang Old Chang Jun Jing Qing
3. "Tai Shang Lao Jun said Chang Jing Qing Jing"
4. "Tai Shang Lao Jun said Chang Jing Qing Jing"
The above four books on Taoist view of life and death are classics and the program of Taoist practice.