Before being reused by Wen Jian, he had been engaged in teaching.
Those who can teach etiquette seriously are basically like Mr. Daoism.
Only ten families were punished, and I guess he didn't expect it himself. Judy asked him to draft the imperial edict, basically forcing him to die. Wen Jian was so grateful to him that he refused to agree to a little moral integrity.
Generally speaking, he is a Confucian scholar with weak ability and good morality, and sticks to his moral outlook to the end.