Introduction to Xiaobei Lake: Xiaobei Lake is an alpine barrier lake. The lotus growing in the lake is Heilongjiang red lotus. It is 135 million years old and is known as "living fossil in the biological world". ". There are also many waterfowl growing in the lake. The Chinese Merganser has been listed in the Red Book of World Endangered Birds. There are only 200 in China, and Xiaobei Lake accounts for 40 of them.