When Emperor Huai disappeared, how old was the Xuan Dynasty? "What year is the Fengxuan Room?" comes from Wang Bo's "Preface to Prince Teng's Pavilion". The whole sentence is "Huai Emperor has not seen me. "What year is the Fengxuan Room?" It means missing the king's palace but not being summoned. When can I go there? Serving the King. Excerpts from the poem "Preface to Prince Teng's Pavilion": After all the excitement and sadness, I know the pros and cons, I hope Chang'an will be in the sun, I will see the Wu in the clouds, the terrain is extreme and the south is deep, the sky is high and the north star is far away, it is difficult to pass the mountain. Yue, who is sad for those who have lost their way, meeting each other by chance, they are all guests from a foreign land, Emperor Huai has not seen him, how old is the Xuan Dynasty, sigh, the fortune is not uniform, the fate is many, Feng Tang Yi Lao, Li Guang is difficult to seal, Qu Jia Yi was in Changsha, not without a holy master, and Liang Hong was in Haiqu, so there was no lack of bright time.