From October to the end of November, Pho Cao seems to wear a new shirt woven with the attractive purple, white, and pink colors of buckwheat flower fields. Especially around November and December, when buckwheat flowers begin to end their season, each branch of mustard flowers grows together, bright yellow and blooming. The mustard flower season here lasts until January of the following year. The beauty of blue sky, white clouds, gods, and colors promises to bring you an unforgettable feeling during your trip in Ha Giang.