"that's awesome, congrats," said a user.
"Honored to ref your matches. Warrior. Congratulations," said another person.
A third person commented, "Welcome to the obsession."
"Jiu Jitsu changes lives!!!! Good for you!!!" remarked another person.
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He reportedly began training in mixed martial arts (MMA) in September of last year, and his coach has called him a "silent killer" in the ring. A video of the billionaire battling with Khai Wu, a professional mixed martial artist and black belt in jiu-jitsu, was shared on his official Instagram account. The co-founder of Facebook referred to Mr. Wu as his training partner at the time.
"You'd never expect these guys to be able to take you down. Next thing you know, they're attacking you with these extremely technical moves. You don't know this nerd is a silent killer," Mr Wu had said at that time about the tycoon.