On the Hulun Buir Plateau, Hulun Lake is unique in that it can vary in scale and has rivers flowing in and out.

When the water of Hulun Lake is abundant, it is freshwater, flowing into the Ergun River system, Heilongjiang River, and finally, the Sea of Okhotsk.

When Hulun Lake is short of water, it becomes a closed water system, and its water becomes brackish water.

Watch this episode to find the geographical feature of Hulun Lake.