Xinhua News Agency, May 25, from today (May 25) to the weekend, the central and eastern regions will welcome a process of relatively heavy rainfall on a large scale, which may affect 18 provinces, autonomous regions, and cities, including Henan, Shandong, and Hubei, where torrential rain may occur. "this round of rainfall process has the characteristics of wide range of influence, changeable core area of rainfall, strong local convection and so on." Introduction of Shi Yan, a meteorological analyst.