The event drew celebrities such as equestrian sportsman Alex Hau Tian, table tennis payer Ma Long and actor/singer Li Yifeng.
Alibaba saw revenues from Singles Day leap 32 percent in local currency terms, which compares with a 60 percent increase in 2015.
Last year it sold a record $13 billion in the 24-hour period. This year the company looks set to reach $20 billion.
The country is facing overcapacity, a lack of expansionary investment and concerns over government policies and the macroeconomy.
A survey of more than 2,000 Chinese firms found that in the second quarter more than 60 percent reported oversupply in the domestic market due to weak demand.
When Jenny Kim founded her fashion brand, Mo & Co., twelve years ago in the southern Chinese city of Guangzhou, she had barely any experience in design. Now the brand counts some 600 stores across China and will post sales this year of more than $300 million.