In a video posted to Twitter Sunday, Philippines boxing legend Manny Pacquiao and Alibaba founder Jack Ma challenged Floyd Mayweather to a fight.

Ma retired from the Chinese e-commerce giant last month, saying he wanted to pursue his other passions, like education.

He is also a renowned martial arts fan, even starring in a short movie produced by Jet Li, in which he played a tai chi master.

RELATED: Floyd Mayweather Ignites Beef with 50 Cent, Says He Has ‘Deadly’ STD

The US boxer has 50-0 winning record and is considered one of the sport’s all-time greats.

He’s technically retired, but has come out of retirement in previous years for big fights.

He earned $9 million for just over two minutes of action during a fight in Japan last year.

Flip the Page to see the Challenge: