The city of Lanzhou is distributed along the Yellow River, narrow in the east-west direction and narrow in the south and north poles. The Yellow River passes through Lanzhou City and is the most distinctive landscape belt along the banks of the Yellow River. The Zhongshan Bridge on the Yellow River is a century-old iron bridge that has become a famous symbol of Lanzhou. The Zhongshan Bridge was built in 1907 and was called the "First Bridge of the Yellow River in the World". It was originally called "Lanzhou Yellow River Iron Bridge". It was renamed Zhongshan Bridge because of the commemoration of Mr. Sun Yat-sen. The north bank of the Yellow River is Baitashan Park. This hill is not high, but it is an excellent view point. The mountain is named after a white tower. After passing the Zhongshan Bridge, it is the gate of the park and is free to open. The White Tower has an open view overlooking Lanzhou City and the sunset. It is a favorite spot for locals. The mountains are densely green and the buildings are simple, which is very suitable for leisure and fitness. The white tower of the top of the mountain was built in the Yuan Dynasty to commemorate the famous Tibetan lama who died in Genghis Khan in Mongolia. At the end of the Yuan Dynasty, the White Tower collapsed. The existing Baita was rebuilt by Liu Yongcheng, an internal supervisor of Ganjing, who was guarding Gansu during the Ming Dynasty. From the mountains overlooking the Yellow River and the city center of Lanzhou, there are many high-rise buildings. This is one of the largest cities in the northwestern region. People come and go on the Zhongshan Bridge, the night falls, and the lights gradually light up.