Wu Collection, Upper Volume Radical: Jade (yù) Jiao Kangxi strokes: 11 Page 730, Entry 11 Broad Rhymes (Guangyun): Pronounced jiao. Bei jiao, in ancient times made of jade. Categorized Texts (Leipian): An instrument used by shamans to divine good or bad fortune. Extended General Records (Yanfanlu): Bei jiao are made from two pieces of clam shell or bamboo roots. Sometimes also written in a variant form (jiao). Chronicles of Jing and Chu Customs (Jingchu Suishiji): During the autumn sacrifice, throwing jiao to the gods to divine fortunes. Note: Jiao means to teach, signifying an order. Sometimes also written in a variant form (jiao). Stone Forest Informal Records (Shilin Yanyu): The Gaoxin Temple houses bamboo cups known as jiao, where one facing down and one facing up indicates a sacred result.