The Butie Boat at the Nanjing Presidential Palace is a stone boat built in the water, so it is called the "Butie Boat". It was built by Yin Jishan, the governor of Liangjiang in the 11th year of Qianlong's reign in the Qing Dynasty (1746), to welcome the emperor's southern tour. The shape of the boat is like a Jiangnan flower boat (a boat used to eat boat dishes and listen to songs while sightseeing). The bottom of the boat is a blue stone hull, the cabin is made of wood, and it is covered with a rolling tile roof. It is 14.50 meters long and the bow is 4.63 meters wide. , the tail width is 4.56 meters, and the shed height is 2.77 meters. Boat, commonly known as land boat, is generally divided into three parts. The head cabin is commonly known as the Shamao Hall, which accounts for one-half of the entire boat; the middle cabin is divided into two, with wooden windows next to it for people to feast and watch; and the rear cabin is the tail cabin. The untied boat is divided into two cabins, the front and rear. The front cabin is decorated as a living room with a set of root-carved furniture. The wood carvings throughout the ship are very magnificent. The bats, sika deer, and lynx (animals) carved on the lintel symbolize blessing, wealth, and longevity respectively. Others include peonies, evergreens, cranes, etc., which all mean longevity and wealth. There are two wooden and colorful lions on the doorpost of the stone boat, with the word "王" on the forehead. The plaque was originally inscribed by Qianlong, but no longer exists. It is now written by calligrapher Fei Xinwo Zuo. Qianlong, Hong Xiuquan, Sun Yat-sen, etc. all rested here. Stone boats are more common in gardens in the south of the Yangtze River. Here, Qianlong called them "untie boats" because of an allusion from Emperor Taizong of the Tang Dynasty. Emperor Taizong of the Tang Dynasty warned Prince Li Zhi (Gaozong): "The common people are compared to water, and the kings are compared to boats. The water can also carry the boat, and the water can also capsize the boat." Qianlong called it "not tied to the boat", referring to his own country. The country is as stable as a rock.