Children chase and play on the lawn at Jinhai Lake scenic spot, Pinggu district, Beijing, China, August 21, 2021. (Photos: China News Service)

People set up tents at the campground by Jinhai Lake, a scenic spot at the Pinggu district, Beijing, China, August 21, 2021. It has turned cool as autumn falls.

People set up tents at the campground by Jinhai Lake, a scenic spot at the Pinggu district, Beijing, China, August 21, 2021. It has turned cool as autumn falls.

People set up tents at the campground by Jinhai Lake, a scenic spot at the Pinggu district, Beijing, China, August 21, 2021. It has turned cool as autumn falls.