《明史·志·卷三十》
诸王到中官皇后处拜四拜，年长之王致完贺词，都拜四拜出去。
诸王诣中宫四拜，长王致词贺毕，皆四拜出。
All princes bowed four times to the Empress in the Zhongguan Palace. After the eldest prince finished the congratulatory speech, they all bowed four times and went out.