Villager Xie Fangying airs silkworm cocoons in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhou Ke)

A villager walks past saplings in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhou Ke)

Aerial photo taken on Sept. 18, 2018 shows a submerged area in Yangchun city of Yangjiang, south China's Guangdong Province. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)

A rescuer takes a break on the vehicle in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)

Villagers transfer livestock in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)

A government official checks submerged farmland in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhou Ke)

People use a raft to convey bottled water in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)

A child stands in a waterlogged area in Yangchun city of Yangjiang, south China's Guangdong Province, Sept. 18, 2018. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)

Aerial photo taken on Sept. 18, 2018 shows a submerged area in Yangchun city of Yangjiang, south China's Guangdong Province. Super typhoon Mangkhut affected over 6,600 hectares of farmland, damaged roads and power supply equipment. Disaster relief operation is underway. (Xinhua/Zhang Jiayang)