According to the way of playing the Chi, according to the wooden figurines made at the Yangjiawan Han Tomb in Changsha and the portraits of the Yuanhe and Zhanghejian (83-87 AD) in Wuyang, South Shandong Province, when playing, the palms of the hands may be turned inward and the body of the Chi is placed. Between the thumb and the index finger, the blow hole and the sound hole are upward at 180°, ...