When did the "four drums" come out of the four thoughts of missing?

"Four drums" means four more days.

Source: Biography of Hu Ying in Ming Dynasty: By Zhu Youjian in Ming Dynasty.

Original content: "Twenty-one years back to Korea, Emperor Chiyi was in Fu Xuan. The emperor was asleep, and when he heard that he had arrived, he hurried to call him. I heard that it was right. If you miss four drums, you will be out. "

In the 21st year of Yongle, Hu Yong returned to Korea and rode a fast horse to visit the emperor in Fu Xuan. The emperor had fallen asleep. When he heard that Hu Ying had arrived, he got up quickly and called on him. Hu Meng reported everything he heard to the emperor and didn't leave until the fourth watch.

Ancient timekeeping divided the night into five classes, each of which lasted about two hours. One is 19-2 1, one is 2 1-23, the third is 23- 1 (equivalent to midnight), and the fourth is 1-3.

Extended data:

Hu Ying (1375-65438+20 September 0463):

1, the word source is clean, and the number is clean. Wujin (now Wujin, Jiangsu) people? . In the early Ming Dynasty, he was an important minister, writer and doctor.

2. Hu Yong was a scholar in the second year of Wen Jian (1400), and was awarded the military and household subjects. Judy, the founder of the Ming Dynasty, ordered him to find the whereabouts of his emperor Zhu Yunwen. Hu Ying served as an official in the Six Dynasties for nearly sixty years. He is frugal and generous, and his feelings are invisible. He was compared to Wen Yanbo, a famous minister in the Northern Song Dynasty. Among them, he served as the minister of rites for 32 years and accumulated to the prince.

3. Ming Yingzong Tianshun for seven years (1463), at the age of 89, was granted the title of "Tai Bao" and "Zhong An" in posthumous title.

4. Hu Ying pays attention to medicine. I once talked with Dai Sigong about Neijing and Difficult Classics, and recommended Zhang Zhongjing as authentic medicine. He is the author of Simple Prescriptions of Hygiene, Selected Works of Wisdom, Laws and Regulations, etc.