Introduction to the former residence of Qian Mu and Qian Weichang: Qian Weichang is the father of modern Chinese mechanics. Qian Mu is the uncle of Qian Weichang. The name "Weichang" was given to Qian Mu. Qian Mu was the leader of Qian who lost his father when he was young. Wei Chang was the first teacher to enter the palace of literature. Due to the bright stars in Qian's former residence, the original Qian Mu's former residence was renamed "Qian Mu-Qian Weichang's former residence". The main entrance of the former residence hangs a plaque of "Seven Leaves Yanxiang" awarded by Emperor Daoguang.