Lesson 4: Reading

Singles' Day always falls on November 11th because the date 11/11 represents four ones, or four singles, standing together. It was originally called 'Bachelor's Day' and the celebration began among students at China's Nanjing University around 1993 as a sort of anti-Valentine's Day. Interestingly, Singles' Day has become the largest online shopping day in the world. The holiday became an important commercial event in China during the first decade of the 21st century when the Chinese e-commerce giant Alibaba offered products with big discounts on its platform for 24 hours, starting at midnight on Nov 11, 2009. Since then, Singles' Day has become a super shopping day, like the post-Thanksgiving Black Friday and Cyber Monday in the U.S. 

Adapted from Investopedia.com