One of my cases has been filed in the Chongwen District Court in Beijing for a year and a half, and the court has been delaying the trial. What should I do?

The time limit for civil cases is 180 days, which means that your case will definitely be closed within 180 days from the date of filing. I don't know whether it is a civil case or a criminal case. If it is a criminal case, it should also be a private prosecution, and the time limit for private prosecution is 180 days. But fraud is a public prosecution case. Your case may have been shelved. You'd better ask in court.