A woman is busy moving two bouquets of flowers at the Dounan Flower Trading Center in Kunming, capital of Southwest China's Yunnan province, on Feb 13, 2016.[Photo/IC]

After buyers take the flowers they have purchased back to their stores, it usually takes three to four hours to pack and mail them.

About 4,200 level-B red roses (the second-highest level and the best seller) are sent each day from Geng's store to customers nationwide.