The name "Chunjian" originated in Japan, and it is the latest variety bred by crossing Qingjian orange with F-2432 Ponkan, which enjoys the reputation of "Citrus Queen", from 65438 to 0979 in Shizuoka Fruit Laboratory of Japan. Pujiang county, Sichuan province is also the main producing area, because of its high sugar, high quality, big fruit and high yield. With the help of brands, high-quality spring-see-rake oranges are exported from Sichuan to the whole country.

Citrusreticulata (synonymous with Citrus reticulata) is a late-maturing hybrid citrus variety of Rutaceae, which was bred by crossing Qingjian with Ponkan F-2432 in Shizuoka Prefecture, Japan 1979. Its fruit has high sugar content, large fruit and high yield. Commonly known as rake, Baba, Chunza, Chunju, Chunju and so on. In spring, citrus sprouts at the end of February, buds appear in mid-March, blooms from the end of April to the beginning of May, and 1 physiological fruit drop occurs in the first half of May, and the second physiological fruit drop occurs in the first half of June, which is slightly sprouted in summer at the end of May or early June, and slightly sprouted in autumn in the first half of August,1kloc-0/early October. In spring, the big fruit is empty and the small fruit is real. The pulp is dark orange, sweet and sour, crisp and juicy, with rich flavor and excellent quality. Generally, there are no seeds, but there are seeds after mixing with some varieties, that is, there are 1~3 seeds, which inherits the excellent gene that the male parent does not get angry.