This is the 3813th most frequent Chinese word.
难关
"难关" means "difficulty" or "challenge."
In this sentence, 难关 refers to a challenging situation that was resolved successfully through combined effort.
在他的领导下,我们成功地克服了这个难关。
Under his leadership, we successfully overcame this difficulty.
Here, 难关 is used to describe a current ongoing difficulty, particularly financial, that a group is facing.
公司正在经历经济上的难关,所有人都需要齐心协力。
The company is going through a financial hardship, and everyone needs to work together.
In this example, 难关 represents the various obstacles encountered during the initial phase of a project.