Generally, you can go to a local 3A hospital for testing. This is a relatively large hospital. The result is completely credible. Hospitals are eligible for preliminary screening.
If it is free, it is your local CDC. There are usually free HIV tests. You should consult your local CDC for details. You are from Shuozhou, so you must be from Shuozhou Center for Disease Control and Prevention. Shuozhou CDC for short. You can search the website of Shuozhou CDC online. Go in and have a look. You can also write down the phone and call for advice.
But I tell you, AIDS can only be ruled out after the six-week window period. If you test it too early. Then the test is of little significance.