Introduction to Hongshan Lake: Hongshan Lake is the largest natural lake in the Shuidonggou Heritage Tourist Area. Climbing a low water-blocking stone dam, the peculiar landscape of "High Gorge Emerging from Pinghu" comes into view. Eagles and cranes soar in the sky, mandarin ducks and wild ducks swim in the water. The scenery is very beautiful. The Ming Dynasty Great Wall on the other side of the cliff stands majestically, which makes people feel Marvel at the architectural skills and wisdom of the ancients.