"A gentleman's trip" means: a gentleman's trip.
Source: The Book of Commandments by Zhuge Liang of the Three Kingdoms
Excerpt from the original text: Gentleman's journey is quiet and self-cultivation, and frugality is self-cultivation. If you don't stay in the garden, you will be unclear, restless and not far away. If you study quietly, you must study. If you don't study, you won't learn widely. If you have no ambition, you can't succeed.
The character of a gentleman is to improve self-cultivation from tranquility and cultivate morality from thrift. You can't be clear about your ambitions without being quiet, and you can't achieve your lofty goals without excluding external interference. Learning must be calm and single-minded, and talent comes from learning. Therefore, if you don't study, you won't grow up, and if you don't have ambition, you won't get results.