周 ㄓㄡ zhōu 髀 ㄅㄧ ˋ bì 算 ㄙㄨㄢ ˋ suàn 经 ㄐㄧㄥ jīng 周 ㄓㄡ zhōu 髀 ㄅㄧ ˋ bì 算 ㄙㄨㄢ ˋ suàn 經 ㄐㄧㄥ jīng Zhou Bi Suan Jing, or Chou Pei Suan Ching, one of the oldest Chinese texts on astronomy and mathematics