“Min’s favourite restaurant was briefly closed last summer but then reopened”
Something is temporary if it happens, and then either changes back to the way it was or changes into another thing.
For example, having a cold is a temporary situation because you will eventually recover
Sentence: “I had a cold last weekend, but I’m better now”
Or
Having to ride your bike to school instead of driving because your car is broken is a temporary situation, because eventually your car will either be repaired or you will get a new car
Sentence: “my car broke down so I had to ride my bike today, but it will be fixed tomorrow”
Keep an eye out for words like “briefly” and “[re]opened” which might hint that the situation changed