Hi tea double cup coupon can not be sold only one. As the name suggests the Hei Cha double cup voucher means two cups and you can't buy just one cup. If you buy a cup, you can look at the Xi Cha one cup coupon. Xicha is a brand created by Shenzhen Meixi Xi Food Management Co., Ltd, headquartered in Shenzhen, Guangdong Province. 2012, Xicha originated in Jiangmen, Guangdong Province, an alley named Jiangbianli. Hei Tea was originally named Royal Tea ROYALTEA, due to the inability to register a trademark, so on February 26, 2016 fully upgraded to the registered brand Hei Tea HEYTEA.