This Oolong is produced from the bush with the same name. The bush was discovered in the South Taiwan, and in 1981 it was designated as an individual cultivar. Scientists suggest that this variety is the result of mixing the two other cultivars, spread out on the island Qing Xin and Dapan Qing Xin. One of the main virtues of the resulting bush is the exceptional yielding capacity: the leaves of the these bushes are picked five – six times a year, and this rapid growth does not affect the quality of the leaves. Each yield has a delicate flavor.

Si Ji Chun grows on relatively low altitudes: 200-800 meters above sea level, yielding capacity depends on the altitude and the area. Besides high yielding capacity, Four seasons spring is characterized by good disease and parasites resistance, therefore this variety is most widely spread on the island. Plantation Da Tou Huei became the key place for this variety, and the name of the tea grower, after whom the variety was called, is Li Chai Yuen.