This aerial photo taken on Sept. 26, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
This aerial photo taken on Sept. 27, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
This aerial photo taken on Sept. 27, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
This photo taken on Sept. 26, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Shao Rui)
Tourists enjoy the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces, on Sept. 26, 2023. (Xinhua/Shao Rui)
This aerial photo taken on Sept. 27, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
This aerial photo taken on Sept. 27, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
This aerial photo taken on Sept. 27, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Xing Guangli)
A tourist takes photos of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces, on Sept. 26, 2023. (Xinhua/Shao Rui)
Tourists enjoy the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces, on Sept. 27, 2023. (Xinhua/Shao Rui)
This photo taken on Sept. 26, 2023 shows the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces. (Xinhua/Shao Rui)
Tourists enjoy the autumn scenery of the Hukou Waterfall on the Yellow River, on the border area between north China's Shanxi and northwest China's Shaanxi provinces, on Sept. 26, 2023. (Xinhua/Shao Rui)