Introduction to Wulao Peak: Wulao Peak is located in the garden cave gate on the west side of the square pagoda. It is composed of five Taihu stones. They are treasures among Taihu stones and are relics of the ruins of Zhuojin Garden by the Ming Dynasty painter Gu Zhengyi. It was named because its shape resembles an old man, with "wrinkles, leaks, transparency, and thinness." Its names are the old man who welcomes guests, the old man who is short, the old man who is tall, the old man who sees off guests, and the old man who sees off guests.