勉为其难 to reluctantly do something difficult
Explanation
勉为其难指勉强去做能力所不及或不愿去做的事。通常用来形容一个人虽然能力有限或者不愿意，但是因为某些原因不得不勉强去做某件事。
Miǎn wéi qí nán refers to reluctantly doing something that one is not capable of or unwilling to do. It is usually used to describe how someone, despite having limited abilities or reluctance, has to reluctantly do something due to certain reasons.
Origin Story
话说唐朝时期，一位饱读诗书的才子名叫李白，在一次宫廷宴会上，皇上命他即兴赋诗一首，以赞颂盛世太平。李白平时喜欢喝酒，不擅长应付这种场合，心中忐忑不安。但考虑到皇上的命令，他还是勉为其难地提笔写诗，尽管诗句不够完美，但表达了对盛世太平的祝愿，皇上也十分满意。此事过后，李白深深感慨，做人要懂得变通，但也不可一味逃避责任，有时需要勉为其难地完成一些任务。
In the Tang Dynasty, a learned scholar named Li Bai attended a court banquet. The emperor ordered him to compose a poem on the spot to praise the peaceful era. Li Bai loved drinking alcohol and wasn't good at handling such situations. He was nervous and worried. But faced with the emperor's order, he reluctantly composed the poem. Although the verses weren't perfect, they expressed his wishes for a peaceful era, and the emperor was pleased. After the event, Li Bai sighed deeply and remarked that in life one should know how to adapt but should not simply avoid responsibility; sometimes one must force oneself to do things.
Usage
勉为其难常用来形容一个人虽然能力有限或者不愿意，但是因为某些原因不得不勉强去做某件事。可以作谓语、定语、状语。
Miǎn wéi qí nán is often used to describe how someone, despite having limited abilities or reluctance, has to reluctantly do something due to certain reasons. It can be used as a predicate, attributive, or adverbial.
Examples
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虽然任务艰巨，但我还是会勉为其难地承担下来。
suīrán rènwù jiānjù, dàn wǒ háishì huì miǎnwéiqínán de chéngdān xiàlái
Although the task is arduous, I will still reluctantly take it on.
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为了集体荣誉，我只好勉为其难地答应了。
wèile jítǐ róngyù, wǒ zhǐhǎo miǎnwéiqínán de dāying le
For the sake of the team, I reluctantly agreed.