Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)

Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)

Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)

Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)

Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)

Photo taken on Sept. 12, 2020 shows the scenery along a moat at Gucheng Park in Huangpu District of east China's Shanghai. Local authorities of Huangpu District have been improving the scenery along the moat to make it even more enjoyable. (Xinhua/Zhang Jiansong)