What are the traditional etiquette in Ming Dynasty?

Bowing ceremony began in Ming Dynasty. In previous dynasties, like the Song Dynasty, it was enough to bow at meetings. And once every three days or once every five days, the emperors of the Ming Dynasty bowed early every day, and some emperors bowed in the afternoon. The big court will kneel and the small court will bow to each other. The first two sentences of the imperial edict that we are familiar with were invented by Zhu Yuanzhang.