 Originally identified by zoo staffers as female, Mei Lan was determined to be male by staff in China at the Chengdu Research Base of Panda Breeding.He is the first offspring of Lun Lun and Yang Yang, who are also the parents of Xi Lan, Po, and 2 pairs of twins, namely Mei Lun & Mei Huan, and Ya Lun & Xi Lun.Mei Lan was relocated to Chengdu, China on February 4, 2010.