When grapes are sweet enough, they go to market

Carrying a sugar testing machine in his hand, Zhao Yao, walks around his vineyard to check whether the grapes are sweet enough to harvest.

"Sunshine Muscat grapes are not easy to plant. Usually higher levels of sugar means good taste," said Zhao, who is in his 20s, about the vineyard of 6.7 hectares in Binchuan county, Yunnan province. "Testing the sugar level is a necessary step to make sure the quality of the grapes meets market standards."