Between Chou Dynasty and Wei Dynasty, the development of ritual official's ability was gradually from complication to sole duty. The first ritual code "Chin Li" was finished in this condition, but "Chin Li" was codified by the group that organized from the high officer, not the ritual official. The first national institution that codified ritual code was 'Hsiu-li Chu' in Chi of Southern Dynasty. And then, the traditional ritual official was real to compile ritual code first in Tang Dynasty.