Kung-Fu, or Tauist Medical Gymnastics, by John Dudgeon, , at sacred-texts.com
10.—The Middle of the Fifth Month, termed "Summer Solstice."—Kneel, stretch the hands, interlock the fingers and bend them over the foot, change the feet right and left each 5 × 7 times, etc. To cure the obstructed wind and damp not dispersed (rheumatism), painful knees, ankles, and arms, palms hot and painful, kidneys, loins and spine painful, heaviness of the body, all sorts of pain. (See Figure). Corresponds with Amiot's No. II, which is directed against pains of the knees, embarrassments of the kidneys, and the swelling of weakness.