How can you allow others to snore and sleep by your own bed? No. From York's "Xu Xuan's employment", which means his own bed, how can he allow others to snore and sleep? In 960, Zhao Kuangyin established the Song Dynasty, and called Li Yu, queen of the Southern Tang Dynasty, to appear before Bianjing. Li Yu was worried that he would be detained, so he sent Xu Xuan to Bianjing for peace. Song Taizu said: On one side of the sofa, no one is allowed to snore or sleep.