What should I do if the number of people interviewed for public institution examinations does not reach 1:3? Will the position be cancelled?

You will be interviewed, but it depends on the general situation. If you happen to be on the line but are too far away from the overall average, you will definitely be rejected; other than that, he can continue Wait for the next batch of people with better quality before accepting them. Generally speaking, public institutions take over a longer period of time and will start recruiting at least 1-2 quarters in advance.