A technician cleans the camera on the inspection trailer before maintaining the catenary system on the Hangzhou-Huangshan high-speed railway in east China's Zhejiang Province, Feb. 25, 2019. Technicians from local railway authorities launched an inspection for catenary system for the 193-km Hangzhou East to Qiandao Lake section of Hangzhou-Huangshan high-speed railway on Tuesday. The high-speed railway was put into operation two months ago, linking Hangzhou, capital of east China's Zhejiang Province which is famous for the West Lake, and Huangshan, a tourist resort well-known for the Huangshan Mountain in east China's Anhui Province. (Xinhua/Huang Zongzhi)