Zi Collection, Upper Volume, Page 4, Entry 02 Explained in Guangyun (Guangyun) as lei qie, and in Jiyun (Jiyun) as shi lei qie, pronounced shui. Jiyun (Jiyun) explains it as a swelling illness. The "Huangdi Lingshu Jing" (Huangdi Lingshu Jing) records: "Wind swelling of the skin and flesh."