on the one hand ... on the other hand idiom
B2 一方面…，另一方面…
used when you are comparing two different facts or two opposite ways of thinking about a situation
On the one hand I'd like a job that pays more, but on the other hand I enjoy the work I'm doing at the moment. 一方面我想要一份薪水更高的工作，但另一方面我也喜欢现在的工作。