March—a gold time for people to enjoy the blossoms. Yellow flower of cole, Chinese milk vetch of purple color with some green leaves among them, all of which is like a natural painting placed on the farmland and strongly attracts visitors, making one forget to return. In this beautiful season, the Shennong Vernal Equinox Medicine Day and the Forth Cole Flower Festival of Anren will open on time. Cole flowers of 250,000 mu bloom beautifully and wait for people's visits.

Generally speaking, cole flowers bloom in early of March every year. This year, the cole flowers seem to pander to catch this special medicine day and will bloom in the mid-to-late March. If so, visitors and merchants can enjoy the cole flowers and purchase the medicine at the meantime.

In Anren county, the Vernal Equinox Day is a festival as important as Chinese Spring Festival. The Medicine Day in every vernal equinox day is a traditional activity held by Anren people to commemorate Yan Emperor Shennong and People of Anren will gather together to celebrate the Medicine Day during this period. Besides different goods available, thousands of herbal medicines to choose for the herbalists are the highlights in the day. There is a famous saying: "medicine is irregular if not arriving at Anren; medicine is useless if not present in Anren; doctor is not famous if not coming to Anren". It is learned from the local history that Yan Emperor once tasted different kinds of herbal medicines in Anren where it is abundant with herbal medicines for its Danxia landform. People like to buy the herbal medicines in the vernal equinox in memory of Shennong from the ancient times.