A farmer has a buffalo plough cropland in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)

A farmer carrying a shovel walks among the fields in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)

Farmers transplant rice seedlings in the field in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)

Farmers transplant rice seedlings in the field in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)

Farmers transplant rice seedlings in the field in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)

Farmers transplant rice seedlings in the field in Dahu Village of Guzhai Mulam Township in Liucheng County, southwest China's Guangxi Zhuang Autonomous Region, May 3, 2013. As the summer approaches, farmers here are busy with planting crops. (Xinhua/Deng Keyi)