In the Forbidden City in the Ming Dynasty, there was a magnificent hall-Big Ben Hall, which was the place where the princes studied in the early Ming Dynasty.
In the early Ming Dynasty, the Miyagi part of Nanjing Imperial City was generally divided into east and west roads, with the meridian gate as the central axis and the north-south road as the middle road, commonly known as the palace; The Wenhua Hall in the east of the palace, and the north-south road is the east road, commonly known as the East Palace; The Wuying Hall in the west of the palace, and the north-south road is the west road, commonly known as the West Palace. The Big Ben Hall in the Prince's Reading Room is located in the East Palace.
According to Lu; "In November of the first year of Hongwu, the Reform Movement of 1898 was ugly, and the East Palace officials and Confucian scholars gave a banquet, each with its own crown. First, build the Hall of Great Heroes, which contains ancient and modern books, extending in all directions in the name of Confucian princes and princes, and select talented people to make up the class capital ... ". In other words, before this, Big Ben Hall had become a place for princes and ministers to read and collect books. Zhu Yuanzhang also wrote an article "Seeing Spring". "Hongwu was six years old, and he was ugly on the tenth day of the first month. He spent two days in Jiayin. When I miss it, I sit in the hall and read young Confucian poetry books ... ". To record him sitting and watching the prince and Bandu read.
So the word "Crown Prince" appeared in this sentence.