The Forbidden City in China is the most famous building complex in ancient history. These buildings vary in height and size. What are the secrets hidden in the building scale of Zijincheng? Today, we decrypt the password of Zijincheng Building from the numbers. First of all, the second house of the back bedroom forms a courtyard, and the ratio of north-south length to east-west width is 1 1:6. The ratio of the north-south length to the east-west width of the courtyard where the three halls of the former dynasty were located was also 1 1:6. And the width of the front yard is almost twice that of the harem yard. That is to say, the courtyard area of the former dynasty is four times that of the harem. However, the size, length and width of the six palaces are basically the same as those of the harem courtyard. The emperor had the idea that "home is the country and the world", so he used the scale of his home, that is, the scale of the harem, to plan the scale of other courtyards in the former dynasty in proportion. The Hall of Supreme Harmony is built according to the highest form of palace architecture, with nine rooms wide and five rooms deep, with a ratio of 9 to 5. Zhonghe Hall Baohe Hall They are located on the same big base. The ratio of the length of north and south to the width of east and west is about 9:5. Ancient numbers were divided into yin and yang, odd numbers were yang and even numbers were yin. The number of imperial palaces in the Forbidden City is positive. The number of harems is negative. Nine is the highest positive number, and five is in the middle. Therefore, the Ninth Five-Year Plan was often used to symbolize the emperor in ancient times, and the emperor was called the statue of the Ninth Five-Year Plan. Many palaces in the Forbidden City have nine bays. These figures all express their concern for the people who live in them? Worship of the supreme power of the emperor. Numbers have become a measure of rank status here. As the highest positive number, nine appears frequently in the buildings of Zijin City. However, some careful visitors will find that there are 1 1 seats in the Hall of Supreme Harmony today, which is far from the Ninth Five-Year Plan and cannot confirm the above statement. Actually, it was because the Hall of Supreme Harmony was being destroyed when Li Zicheng attacked the Forbidden City. Later, due to the lack of suitable materials, the width of room 9 was changed to 1 1 room to reduce the purlin length. The number of animals on the eaves and ridges of the palace is usually odd, with Yang No.9 as the largest.