Why are the floors of Wang Yue Building closed?

It's under renovation. According to the website of Mianyang Local Treasure, only floors 1 and 2, and floors 9 to 15 of Wang Yue Building are open. The open floors are all for commercial purposes, selling all kinds of things, and the middle floor is being renovated and reloaded, so it is not open. Wang Yuelou, located at the top of Guishan Mountain in Mianyang City, Sichuan Province, was built by Li Zhen, the eighth son of Li Shimin of Emperor Taizong, when he was in Mianzhou, and it was also one of the four famous buildings in the Tang Dynasty.