The Double Eleven Shopping Carnival refers to the online promotion day on November 11th each year, originating from the online promotion activity held by Taobao Mall (Tmall) on November 11th, 2009. At that time, the number of merchants and promotion efforts involved were limited, but the revenue far exceeded the expected effect. Therefore, November 11th became a fixed date for Tmall to hold large-scale promotional activities.

The Double Twelve Shopping Carnival, as the name suggests, is on December 12th every year. After the Double Eleven on Tmall, JD.com, and Suning eBay, news has come again from major e-commerce websites such as Taobao, JD.com, and Suning eBay. On December 12th, they will launch the largest online shopping feast of the year and continue the "nationwide frenzy" activity. Abbreviated as Double Twelve, or Taobao Double Twelve, JD.com Double Twelve, or Suning eBay Double Twelve.