Introduction to the T-shaped corridor: is the corridor between Sun Yirang’s former residence and the Yuhai Library. It is located behind Baijin Taozhai. It is shaped like a T, so it is called "T-shaped corridor". The walls inside the corridor are embedded with inscriptions written by Sun Yiyan, Sun Yirang, Sun Yize, Jiang Ligang, Guo Moruo and others.