Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Yang Shiyao)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Yang Shiyao)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Yang Shiyao)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Zhu Xudong)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Zhu Xudong)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Zhu Xudong)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Zhu Xudong)

Aerial photo taken on Sept. 24, 2022 shows paddy fields at a rice planting demonstration zone in Dawang Town of Anxin County of Xiong'an New Area, north China's Hebei Province. Anxin County of Xiong'an New Area has a long history of rice cultivation. Located near Baiyangdian Lake, the largest wetland ecosystem in northern China, Anxin County has exceptional irrigation advantage in rice planting. In recent years, Anxin County has adopted rice-fish and rice-crab co-culture modes to build a modern eco-agriculture demonstration zone. (Xinhua/Yang Shiyao)