"Jade Letter Tongmi" is an ancient Chinese Feng Shui classic with Xuankong regulating Qi as its core. This book is regarded as the source of Xuan Kong Qi Feng Shui theory, and systematically reveals the deep logic of traditional Chinese Feng Shui. Based on the philosophy of "Hetu Luoshu", combined with the "Three Yuan Nine Lucks" time and space system, we can deduce the good and bad fortunes of the two houses of Yin and Yang.
