I’m not sure about China specifically, and I’m inclined to believe Chinese courts are severely compromised, but having a high conviction rate may not be unfair.

In 2012 the DOJ conviction rate was 93%. For a liberal state like California, the conviction rate was 72% in 2000.

They want plea bargains. By the time the DOJ indicts, the amount of evidence against you is so overwhelming that your chances of being acquitted are near zero. You’re better off pleading guilty to a lessor charge and taking your punishment.

If you do go to trial, well, that’s why the DOJ has a 93% conviction rate. You stand almost no chance by the time it gets to court.

If you had a slim hope, you would be offered a plea deal and the DOJ would rather avoid court entirely.