In the period of the Northern and Southern Dynasties (China), keigaku (study of Keisho in Confucianism) such as the Sanron sect and the Jojitsu sect became popular, and such stream was further transmitted to east.
南北朝時代(中国)には三論宗・成実宗などの経学が流行し、これらの流れがさらに東へ伝播していく。