For local farmers in Qujing, money does grow on trees since the local government enticed the Joyvio Group to invest in plantations to grow a superfood. Wang Hao, Yang Feiyue and Li Yingqing report in Qujing, Yunnan.

Yingqing Xu Huayuan is using secateurs to trim blueberry trees in a vast plantation in Yunnan province.

"You can try one of the blueberries that have turned dark blue on the trees. They are sweet," says the 32-year-old.

Xu is a contract worker on a blueberry plantation in the Qilin district of Qujing city, which is owned by Joyvio Group, the strategic investment arm for food and agribusiness of Legend Holdings.

He has been working at the plantation, which covers 73 hectares, for a year, caring for its 240,000 blueberry trees along with seven others.

His work includes keeping a record of the development of each blueberry tree in the area of the farm he is responsible for, monitoring the changes in temperature and water content on a daily basis throughout the year.

"My life is much easier and more stable now than it used to be," says Xu, who used to grow tobacco on his 0.7 hectare of land. "I had to dig into my own pockets to buy pesticide and fertilizer, do all the heavy lifting during the harvest, and find buyers," he says.

His family could make up to 30,000 yuan ($4,500) if there was a good harvest, but would lose it all when the weather wreaked havoc.

The city produces among the best tobacco nationwide, and its output accounts for approximately 9 percent of the total nationwide.

"Tobacco is still a pillar industry. But we are trying to make other sectors, like farming, vacation and sport tourism, take up a larger proportion, so that the industrial mix would be healthier, too. Blueberries are our new hope," says Dong Baotong, the mayor of Qujing.