God depends on each other ",that is, Taoist sleeping skills. Those who correct the truth can hide the condensed god in an air bag and keep it. Then inhale and exhale, seize the vitality of the innate element and enter the cavitation. Long-term and straight qi is full, smooth in limbs, scattered in bones, and has no block. Then naturally two kidneys are decocted, and the abdomen is hot, and the switch is also turned on. Professor Su Huaren, a disciple of Wu Yunqing 160 years old, once taught them. You can find them by searching Guangzhou and Daotang.