Watch: Jack Ma does a Michael Jackson dance number at Alibaba annual party

Ma arrived at the party in a motorcycle, donning a black-and-gold mask

Jack Ma, founder of Chinese e-commerce major Alibaba, on Friday arrived at the company's 17th annual party on a motorcycle, donning a black-and-gold mask. And this was not all the jazz that was. The billionaire surprised his employees with a dance performance to the beat of Michael Jackson. 

Ma performed on Jackson's Billie Jean. Then, he removed the mask and invited others to perform with him. Together, the group grooved to the tunes of the famous number Black and White.

Well, Ma has all the reasons to celebrate, as Alibaba's valuation recently exceeded the $400-billion mark.

Senior executives and working