People visit the Grand Canal Museum of Beijing in Tongzhou District of Beijing, capital of China, Aug. 15, 2025. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

This photo take on Aug. 16, 2025 shows a view along the Grand Canal in Tongzhou District of Beijing, capital of China. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

People take a boat tour on a lake by the Grand Canal in Tongzhou District of Beijing, capital of China, Aug. 16, 2025. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

This photo taken on Aug. 15, 2025 shows the Beijing Performing Arts Center along the Grand Canal in Tongzhou District of Beijing, capital of China. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

People enjoy leisure time at a park along the Grand Canal in Tongzhou District of Beijing, capital of China, Aug. 16, 2025. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

A robotic cleaner works at a business district along the Grand Canal in Tongzhou District of Beijing, capital of China, Aug. 16, 2025. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)

People read books at Beijing Library in Tongzhou District of Beijing, capital of China, Aug. 15, 2025. Connecting Beijing and Hangzhou in east China's Zhejiang Province, the Grand Canal is the world's longest artificial waterway.

In recent years, Beijing has implemented an array of measures in the protection of the environment in and along the Grand Canal, which has lead to improved water quality, restored biodiversity as well as enhanced vegetation coverage. (Xinhua/Li Xin)