A worker of the Minxian Water Bureau checks equipment of an automatic rainfall station at Hadiha village of Hetuo township in Minxian county, Northwest China's Gansu province, July 20, 2014. Minxian county has set up an early warning and forecasting system after the 6.6-magnitude earthquake hit a juncture region of Minxian county and Zhangxian county July 22, 2013.[Photo/Xinhua] |
North China gets early-warning system for quakes | Doubts linger over warning system for smog |