The incident came in first-half injury time during Guangzhou R&F's 1-1 draw with Shanghai SIPG, shortly after Hulk had equalised for the away side, who are managed by former Tottenham and Chelsea boss Andre Villas-Boas.
Oscar became agitated and appeared to deliberately lash the ball at two opposition players before being pushed to the ground.
That prompted a brawl involving all 22 players, both sets of substitutes and several members of staff on the pitch.