Generally speaking, CET-4 and CET-6 are national selective examinations. After the examination time is determined, the examination will not be postponed.
Only when there are some dangerous situations in the region, such as COVID-19 epidemic this year, earthquake and flood, which endanger the physical safety of candidates, will the Education Bureau of the Examination Bureau issue a document to postpone the examination.
At this time, if you are in such a dangerous area and meet such conditions, you can take the school as a unit and hand in your own handwritten application to the school. The school can only apply for deferred examination after statistics.