Buy the Huangshi Gong Qingsang Sutra. "Qingnang Jing" was published by Huang Shi in the late Qin Dynasty and early Han Dynasty. It is the first feng shui scripture with written records in Chinese history. Under the ancient Chinese philosophical system, "Qingxiang Jing" established the specific philosophical thoughts and theoretical system of Feng Shui. Although the "Qing Sang Jing" is only about 400 words long, it is profound, concise and clear, and it directly explains the theory without being mysterious. However, it reveals the great method of regulating qi and feng shui in Luantou, and lays the foundation for the development of feng shui.