Many hospitals in Changchun can do electrical audiometry, or you can go to a hearing aid interlocking organization to do free electrical audiometry.
Electrical audiometry is the process of wearing headphones in a soundproof room, which will emit sound at different frequencies, and the test is based on whether or not you can hear the sound to make a decision, and the audiogram will be produced after the test.
Simply doing an electric audiogram is cheap at a few tens of dollars, but usually if there is a hearing problem it is not a simple audiogram. There is also a difference in the cost of an audiogram between an outpatient clinic at a secondary and tertiary hospital.