This is a perfect statement by Zheng!
It is definitely a hindrance and I’ll go further: Sabalenka is cheating in every match she plays by shrieking in the middle of points. Shame on the WTA for allowing her behavior!
Qinwen Zheng after loss to Sabalenka:
"I will say this. How can you scream when you hit the ball but you still screaming when I hit the ball? This is hindrance. I could have played better, but we need to change the rule. If not, OK. I will scream when she hits next time we play"