《黄帝内经·素问·刺法论》
土疫易伤水脏，当先取背部之肾俞穴，以补肾水，隔三日后，再刺足太阴脉之所注。
当先补肾俞，次三日，可刺足太阴之所注。
Earth disease easily damages kidney organ, so first choose kidney shu points on the back to invigorate kidney water, after three days, again puncture the position where the spleen meridian enters.