Why did ancient funerals bend weapons?

In the palace, all doors are forbidden, and all yellow doors are yellow. "Tongdian": "The official is in the room, and the 20-year-old Huangmen Huangmen was yellow a few years ago." Han Shu said. "Go against Huang Bei's kindness to Yu Men", which is called Huang Men Shi in Chinese, and the official refers to an official. After Jin began to specialize in learning, he devoted himself to the province. Mr. Zhang of China said that the Order of Shooting Officials in Xuanwu Gate said: "It is the life of the Yellow Gate, nine Qing and six things." Wei Zi refers to the book and refers to the eunuch of the Yellow Gate. Once again, Han Meng's door makes the yellow door official, any official's. Shi said that the patient was told because of the yellow door.