The Three Gorges Reservoir area is the main production area of red oranges in China, with more than 4,000 years of planting history and more than 2,000 years of written history, and even more with the Ode to Orange of Qu Yuan, a famous ancient poet in China, 254 BC, which is celebrated to this day. Red orange in Three Gorges Reservoir Area mainly relies on picking red orange seeds for sowing, and the biological populations formed through solid reproduction are one of the oldest agricultural germplasm resources in China, which represents the ancient agricultural germplasm resources and farming measures in China, and epitomizes the ancient agriculture and ancient varieties in Three Gorges Reservoir Area, which, due to its exuberant vitality, has survived through thousands of years of changes and has remained uninterrupted to date and is still serving for the local agricultural economy. Since the construction of the Three Gorges Project, a large number of red orange bases were flooded, Qu Yuan's hometown of Zigui, Hubei, and other large areas of the Three Gorges Reservoir area of red orange bases were flooded, no longer exists, Chongqing, Chongqing Yuxi region of the red orange, due to a large number of new varieties of the emergence of competitiveness declined, and gradually out of control, decline, has been out of scale, and at present, the only only remaining along the river area of Wanzhou is still a concentrated population exists.
Wanzhou is one of the origin of Dahongpao red orange, Wanzhou more than 60 kilometers along the Yangtze River at an altitude of 175-600 meters within the territory, the mountains are planted with Dahongpao red orange.