Double Eleven refers to November 11th every year. Due to the special date, it is also called Singles’ Day. At the same time, Double Eleven is also the day of Taobao’s annual large-scale sales, so the promotion starts at 0:00 a.m. on November 11 every year.

November 11th, Singles’ Day, originates from the fact that there are four Arabic numerals "1" in the date of this day, which are shaped like four smooth sticks. "Single" means "single" in Chinese, so Singles' Day is an alternative festival for singles, and this day is designated as "Singles' Day".

It is also the day of Taobao’s annual grand sale. Therefore, the promotion starts at 0:00 am on November 11th every year.

Every year on November 11th, large e-commerce websites represented by Tmall, JD.com, and Suning.com generally use this day to carry out some large-scale discount promotions to increase sales. It has gradually become the largest commercial promotion carnival event on the Internet in China.

"Double Eleven" not only makes e-commerce companies keen on promotions, but even operators have begun to engage in promotional activities. Alibaba Group Holdings Co., Ltd. submitted a "Double Eleven" trademark registration application to the National Trademark Office on November 1, 2011. At the end of October 2014, Alibaba issued a notification letter stating that Alibaba Group had obtained the "Double Eleven" registered trademark.