So neither the room nor the bed will be too big. The area has been accurately calculated. On the day of winter solstice, the room was half bright and half dark.

For example, the bed of Empress Dowager Cixi is thin and long, which in turn means longevity. Both the Forbidden City and the Summer Palace are like this. You can go back and have a look if you are interested. Very interesting.

Pure manual code is expected to be adopted.