Tourists pose for a photo at the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China, March 29, 2023. (Xinhua/Chen Zhonghao)
This aerial photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Zhang Chenlin)
This aerial photo taken on March 28, 2023 shows the Shuiguan Great Wall in Beijing, capital of China. (Xinhua/Ju Huanzong)
This aerial photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Chen Zhonghao)
This photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall in Beijing, capital of China. (Xinhua/Zhang Chenlin)
Tourists visit the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China, March 29, 2023. (Xinhua/Zhang Chenlin)
A train runs amid blooming flowers near the Juyongguan section of the Great Wall in Beijing, capital of China, March 23, 2023. (Xinhua/Chen Zhonghao)
This aerial photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Zhang Chenlin)
Tourists visit the Mutianyu section of the Great Wall in Beijing, capital of China, March 29, 2023. (Xinhua/Ju Huanzong)
This photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Chen Zhonghao)
This aerial photo taken on March 29, 2023 shows a boat sailing at the foot of the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Chen Zhonghao)
This aerial photo taken on March 29, 2023 shows the Huanghuacheng Lakeside Great Wall Reserve in Beijing, capital of China. (Xinhua/Zhang Chenlin)
This aerial photo taken on March 28, 2023 shows the Shuiguan Great Wall in Beijing, capital of China. (Xinhua/Ju Huanzong)
This aerial photo taken on March 28, 2023 shows the Shuiguan Great Wall in Beijing, capital of China. (Xinhua/Ju Huanzong)
Tourists visit the Mutianyu section of the Great Wall in Beijing, capital of China, March 29, 2023. (Xinhua/Ju Huanzong)
原文地址：http://en.people.cn/n3/2023/0331/c90000-10229862.html