A flower trader has a meal at work in Kunming, capital of Southwest China's Yunnan province, on Feb 13, 2016.[Photo/IC]

Geng Xinwei has only slept for three hours a day for the past 12 days.

The 24-year-old flower trader in Kunming, Yunnan province, has been busy with the Valentine's Day flower auction.

"Orders increase and flowers sell for prices that are five times higher than usual," he said, adding that most of the flowers he bought in the past two weeks were red roses.

Rising at 8 am, Geng goes to the Kunming International Flora Auction Trading Center to inspect the flowers he wants to buy.