The unique part of Chinese law is the lack of judicial supremacy or "rule of law". The party has supremacy over legal system interpretation as part of the '3 Supremes' order of precedence, with workers also coming ahead of the law.
In the US system, there are still miscarriages of Justice, but there is judicial supremacy and separation of powers.
The powers aren't as separated as say the French justice system, but most would say the US judicial system is mostly independent of the other branches of government.