shut the door, which means that the host refuses the guest to enter the door and is called shutting the door on the guest. Tang Fengzhi's "Miscellaneous Notes of Yunxian Cave": "Shi Feng is also a prostitute in Xuancheng. Treat the guests with the same difference ... If you don't meet each other, treat them with a closed door. " It means to treat guests with soup and not meet each other. After that, it means refusing guests to enter the door and not meeting each other. Shi Sheng of Qing Dynasty, "Ten States of Spring Talk, Pinyan": "Those who have not seen it for three years, I plan to revisit it, for fear that its effect will be closed."