A man practices bicycle motocross at Lyumengshan park in Changxing County, east China's Zhejiang Province, May 20, 2018. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)

People practice roller skating at Lyumengshan park in Changxing County, east China's Zhejiang Province, May 20, 2018. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)

People practice bicycle motocross at Lyumengshan park in Changxing County, east China's Zhejiang Province, May 20, 2018. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)

Aerial photo taken on May 20, 2018 shows an observation platform of Lyumengshan park in Changxing County, east China's Zhejiang Province. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)

Aerial photo taken on May 20, 2018 shows a general of view of Lyumengshan park in Changxing County, east China's Zhejiang Province. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)

Aerial photo taken on May 20, 2018 shows a path of Lyumengshan park in Changxing County, east China's Zhejiang Province. The park covering an area of 8.67 hectares was open to the public on Sunday. Changxing developed rural tourism and promoted the construction of beautiful villages. (Xinhua/Xu Yu)