There really was no Yong 'an Building in Song Dynasty. Yong 'an Building is a restaurant named Yong 'an Building opened by Zhao in Tokyo in the film and television drama "Flower Dream Road", with the historical background of Song Dynasty. In the play, it is introduced that there are three pavilions and one pavilion in Yong 'an Building, which are specially used to receive distinguished guests. Qian Shan Pavilion is a * * * reward for both refined and popular tastes; There are tiles near Wanshuige, and the performances are different every day. It's not true.