Marking the fifth anniversary of the establishment of China's first batch of national parks, CGTN takes you to #Sanjiangyuan National Park, home to the sources of the Yangtze, Yellow and Lancang rivers. Located on the Qinghai-Xizang Plateau, the park covers 123,100 square kilometers, making it the largest national park in China. With an average elevation of around 4,500 meters, the region is a vital part of the plateau's unique ecosystem and plays a crucial role in protecting the headwaters of three major rivers in Asia.