About Yongdeng: Yongdeng County is located in the central part of Gansu Province, northwest of Lanzhou. It was established during the Western Han Dynasty (during the third year of the Yuanshou era) and has more than 2000 years of history. It is home to the Tulugou National Forest Park, which is located in Liancheng National Nature Reserve. Here there are more than 30 sights, including stone cliffs, immense forests, and deep valleys. There are numerous rare animals in the park, which could be described as a natural biological garden.