Over 12 months. Zhao 'an Baxian Tea is the first national oolong tea variety newly bred after the founding of New China. Preservatives and antioxidants are added to the product, and the shelf life exceeds 12 months. Baxian Tea is a new oolong tea variety successfully bred by 1968 in Zhaoan County, Zhangzhou City. Oolong tea made of Eight Immortals Tea has a strong aroma, durable foam resistance and unique flavor, which is favored by the markets in southern Fujian and Chaoshan, Guangdong.