The West Building Observation Deck is located in the west of Louguan Town, about 5 kilometers away from the "first blessed place in the world" Lou Guantai. The most important relics of the West Building Observation Deck are Laozi's tombs (clothes). Laozi wrote the "Moral Sutra" in Lou Guantai and said it, but no one knows where it will go after. The more popular legend is that he went all the way west, Yuzhou Yuhuan into immortals in Gansu.