Yin Yang Style consists of eight postures: Each posture has 3 Chengs and the total is 24 Chengs. The bear form palms routine is divided into two parts and each part includes four postures. The characteristics of the Bear Form Palms: turning its waist and bending its back, having bold and vigorous power. It is like a black bear flexing back, rolling, and pouncing. The Snake Form Palms of Tian's family Yin Yang Bagua Zhang consists of eight postures: Each posture has 3 Chengs and the total is 24 Chengs. The Snake Form Palms routine is divided into two parts and each part
Yin and yang "to shelter; shade", and 陽 or 阳 "sunny" is always pronounced with rising second tone "yáng". Sinologists and historical linguists have reconstructed Middle Chinese pronunciations from data in the (7th century CE) "Qieyun" rhyme dictionary and later rhyme tables, which was subsequently used to reconstruct Old Chinese phonology from rhymes in the (11th-7th centuries BCE) "Shijing" and phonological components of Chinese characters. Reconstructions of Old Chinese have illuminated the etymology of modern Chinese words. Compare these Middle Chinese and Old Chinese (with asterisk) reconstructions of "yīn" 陰 and "yáng" 陽: Schuessler gives probable Sino-Tibetan etymologies for both Chinese words. "Yin"