Mazhan Four Seasons Pomelo is a traditional famous fruit in Wenzhou, which originated from mazhan town, Cangnan County. According to the Zhou Family Tree in Xiakui Village, mazhan town, "Zhou Dachuan Zizhen (AD 1698-178) was the deputy government of Sichuan Zhongjun, and when he went home to visit relatives during Qian Zong's tenure, he brought back several gardens that were discarded after eating, and the seedlings naturally grew. Cangnan Four Seasons Pomelo was formed 26 years ago during the Qianlong period of the Qing Dynasty. It was named as "the famous fruit of the immortal family" because of its flowering and fruiting all the year round. It was listed as a royal tribute during the Daoguang period of the Qing Dynasty. The Four Seasons Pomelo is beautiful in shape, rich in fragrance, thin and seedless, nutritious and storable. It is not only a delicious fruit, but also a natural Chinese medicine health food, with the functions of regulating human metabolism, lowering blood pressure, beautifying, promoting digestion and detoxifying. As the saying goes, "If you often eat four-season pomelo, you will live a long and healthy life, and the fairy family will hide the famous fruit, and the financial resources will be available in all seasons". Over the years, it has been rated as high-quality fruit by the Ministry of Agriculture for many times, and won the gold medal in the second China Agricultural Expo. In 1999, it won the certificate of famous brand products in China, was awarded the title of "green commodity" by the Ministry of Agriculture in 22, and was named "the hometown of four seasons pomelo in China" by the recommendation naming committee of China in 23.

Cangnan Four Seasons Pomelo has an existing cultivation area of 3, mu and an annual output of 12, tons, which is a leading industry of benefit agriculture in Cangnan County. In recent years, Cangnan County has attached great importance to the development of characteristic products of Four Seasons Pomelo, specially set up a leading group for the industrialization development of Four Seasons Pomelo, worked out the development plan of the project, and further improved the popularity of Cangnan Four Seasons Pomelo at home and abroad by holding activities such as Cangnan County Four Seasons Pomelo Culture Festival and Cangnan Four Seasons Pomelo Development Strategy Seminar. At the same time, it has paid attention to brand building, and registered trademarks such as "Mazhan", "Pumen" and "Cangguo" successively, among which "Cangguo" was the trademark.