Aircraft cruise in the stratosphere because the airflow here is stable and there are few turbulences. But just because there are few does not mean there are none. Moreover, the sudden bumps during the smooth ride are even more nerve-wracking.
Deng Na is an extremely cautious person and must weigh everything carefully to ensure stability. However, life is a gamble, and perhaps a decision made in a hurry can better represent your sincerity than a decision made after careful consideration.