Early in his career, a high percentage of Zhou's blocks are likely to come when he surprises a shooter as a help defender from the weak side. Though he does a nice job of getting in help position -- and already has good timing for staying in the paint for 2.9 seconds before retreating outside it to avoid a defensive three-second violation -- Zhou doesn't really get off the ground enough to utilize verticality and can be overpowered when a player drives directly at him. Opponents have also been able to bump Zhou off his spot and create enough separation to shoot over him.