1 / 4   The annual "Double Eleven" shopping festival, the country's biggest shopping day, officially kicked off at 12:00 midnight on November 11 in China. Meanwhile, to prepare for the arrival of the festival, lights have been brightly lit for the whole night at Alibaba's headquarters in Hangzhou, east China's Zhejiang Province. /VCG Photo

2 / 4   For momentum at Alibaba, the "Double Eleven" is more like a war they must win. To celebrate the festival and to energize the staff, a light show was held at the headquarters. /VCG Photo

3 / 4   Staff members in the office were captured putting on facial masks while staying up late to work overtime. /VCG Photo

4 / 4   As midnight, the sales on Alibaba's Tmall platform has exceeded 100 billion yuan on 1:47 a.m. /VCG Photo