![](http://www.ecns.cn/hd/2023/07/31/3fe1f7185a5a41dd845724f5999ae434.jpg)
Rainwater spouts from a dragon-shaped ancient drainage system in the Palace Museum during a heavy rainstorm in Beijing, July 31, 2023. (Photo: China News Service/Sheng Jiapeng)
Built in the Ming Dynasty (1368-1644), the Palace Museum has been well-maintained over the past few centuries.
![](http://www.ecns.cn/hd/2023/07/31/8e63d19a4d5e412c9bd079e121c7663a.jpg)
Rainwater spouts from a dragon-shaped ancient drainage system in the Palace Museum during a heavy rainstorm in Beijing, July 31, 2023. (Photo: China News Service/Sheng Jiapeng)
![](http://www.ecns.cn/hd/2023/07/31/02f6b4bc953f4fa8aefac63929baaf2c.jpg)
Rainwater spouts from a dragon-shaped ancient drainage system in the Palace Museum during a heavy rainstorm in Beijing, July 31, 2023. (Photo: China News Service/Sheng Jiapeng)
![](http://www.ecns.cn/hd/2023/07/31/990a4497ab0643379ba8e89a72f05527.jpg)
Rainwater spouts from a dragon-shaped ancient drainage system in the Palace Museum during a heavy rainstorm in Beijing, July 31, 2023. (Photo: China News Service/Sheng Jiapeng)