In spring, flocks of herons migrate to Zengjiazhai Village, Huangqizhai Town, Kaiyuan City, Liaoning Province, making the peaceful village alive again. Some of the herons land all over the hillsides, and others soar and fly over the smoke from cooking fires in the morning, showing a splendid painting of the return of spring. Zengjiazhai Village is known as Bailuzhou Wildlife Sanctuary, covered with intact vegetation. There are lush trees on the hillsides and down the hills is a large area of wetland with abundant fish, shrimp and water plants, which is the best habitat for herons. Currently there are more than 2,000 herons gathering here, with a peak of more than 6,000 herons.