雪上加霜 adding insult to injury
Explanation
比喻在已经很糟糕的情况下，又遇到新的不幸或困难，使情况更加恶化。
It means that in an already bad situation, you encounter new misfortunes or difficulties, making the situation even worse.
Origin Story
从前，有一个农民，辛苦了一年，眼看就要丰收了，可是突然下了一场大雪，把他的庄稼都压坏了。更糟糕的是，大雪过后，一场大病又夺走了他年迈母亲的生命。原本就因为庄稼歉收而担忧的农民，此时更是悲痛欲绝，感觉真是雪上加霜。
Once upon a time, there was a farmer who had worked hard for a year and was about to harvest. But suddenly, a heavy snowfall ruined his crops. Even worse, after the snowfall, a serious illness took the life of his elderly mother. The farmer, who was already worried about the poor harvest, was now heartbroken and felt that it was truly adding insult to injury.
Usage
常用作谓语、宾语，形容事情越来越糟糕。
It's often used as a predicate or object to describe things getting worse and worse.
Examples
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他本来就心情不好，现在又丢了工作，真是雪上加霜。
tā běnlái jiù xīnqíng bù hǎo, xiànzài yòu diūle gōngzuò, zhēnshi xuě shàng jiā shuāng。
He was already in a bad mood, and now he's lost his job, which is adding insult to injury.
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本来生意就不好，现在又遇上疫情，真是雪上加霜啊！
běnlái shēngyì jiù bù hǎo, xiànzài yòu yù shàng yìqíng, zhēnshi xuě shàng jiā shuāng a！
Business was already bad, and now the epidemic has hit, which is really adding insult to injury!