CGTN's reporter He Weiwei just came back from the core site of the search operation for the second black box. This morning rescuers found some orange pieces, the color of the black box. But they haven't found the second black box yet. She also said another challenge of the search is weather, as for the past few days it has been raining heavily, causing water logging in the area. The China Eastern Airlines Boeing 737 airplane crashed Monday afternoon in south China's Guangxi Zhuang Autonomous Region.