Do you want to stand guard after the fourth exam in Tianshui?

After the exam of subject four, it should be waiting for the certificate. There is no such thing as standing guard. Are you talking about the driver's license deducted to 12 points? If you deduct 12, you need to retake subject 4, usually before the exam, study in the morning and stand guard in the afternoon, or stand guard in the morning and study in the afternoon. Maybe every place has different regulations. You can consult the local traffic police brigade directly.