Is there a god of law or something like that in Chinese mythology?

The ancient Chinese symbol of law was the beast Xiezhi (unicorn), while in Western mythology it was the goddess of justice and other beauties.

The Roman goddess of justice embodied many of the principles of Roman law, such as the high scales, which embodied the fairness of discretion, and the sword, which embodied the coercive force of the law. Accordingly, the principle embodied in the double blindfold is that the judge should not be confused by the appearance of the truth.