1. Check the audit progress: You can log on to the website of your local tax authority, check your audit progress through the online inquiry system or call the tax customer service.
2. Go to the tax authorities: If you find that your audit progress has been overtime and there is no progress, you can consider consulting with the local tax authorities or complaining to the staff.
3. Consult an accountant or tax expert: If necessary, you can also consult your accountant or tax expert for more detailed guidance and suggestions.
It should be noted that the progress of tax inspection may be affected by various factors, such as the workload of tax authorities, holidays and so on. If you haven't received feedback for a long time, you can also complain to the higher tax authorities.