Xu Weizhou, a Chinese actor, takes part in the mini marathon (3.5 km) of the 2017 Wuxi Marathon held in Wuxi, Jiangsu province on March 19. Xu poses for a group photo with runners. [Photo provided by organizing committee of Wuxi Marathon]

Volunteers wearing pink gloves pose for a group photo before the start of the 2017 Wuxi Marathon held in Wuxi, Jiangsu province on March 19. More than 3,000 well-trained volunteers work to ensure a smooth and safe event by lining water stands and providing help and assistance throughout the day. [Photo provided by organizing committee of Wuxi Marathon]