This aerial photo taken on July 12, 2018 shows sand sculpture works to be shown at the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A sand sculptor prepares a piece of work for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A visitor looks at a piece of sand sculpture work to be shown at the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

This aerial photo taken on July 12, 2018 shows a sand sculpture work on the theme of ancient Chinese terracotta warriors to be shown at the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A Belgian sand sculptor prepares a piece of work on the theme of ancient Chinese terracotta warriors for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A sand sculptor prepares a piece of work for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A sand sculptor prepares a piece of work for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

In this aerial photo taken on July 12, 2018, sand sculptors prepare their works for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A Spanish sand sculptor prepares a piece of work for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)

A sand sculptor prepares a piece of work on the theme of ancient Chinese terracotta warriors for the upcoming 2018 Zhoushan International Sand Sculpture Festival in Zhoushan, east China's Zhejiang Province, July 12, 2018. The works of over 30 sand sculptors worldwide will be officially made available to public visitors on July 21. (Xinhua/Xu Yu)