小题大做 make a fuss over trifles
Explanation
指把小事情当作大事情来处理，故意夸大其词。
To treat a minor issue as a major one; to exaggerate a small matter.
Origin Story
话说战国时期，赵国国君赵孝成王是个昏庸无能的君主，常常因为一些鸡毛蒜皮的小事就大动干戈，弄得朝堂之上鸡飞狗跳。有一次，燕国派大军来犯，赵孝成王却因为一件小事而耽误了战机。原来，赵王最喜欢的爱妃丢失了一件价值不菲的玉佩，赵王为此大发雷霆，下令全城搜查。结果，搜查了好几天，才在一个不起眼的角落里找到这块玉佩。而与此同时，燕国的军队已经逼近城下，赵国将士们人心惶惶。赵王这才意识到自己的愚蠢，但为时已晚，赵国最终遭受了巨大的损失。这个故事就成为了后人用来形容小题大做，不顾大局的典型案例。
During the Warring States period in ancient China, King Zhao Xiaocheng of Zhao was an incompetent ruler who often made a fuss over trivial matters. One time, the kingdom of Yan was about to invade, but the King was preoccupied with a missing valuable jade pendant belonging to his favorite concubine. The king ordered a citywide search, neglecting the impending war. Days were spent finding the pendant, only to be discovered in an inconspicuous corner. By that time, Yan’s army had already approached the city walls. King Zhao belatedly realised the severity of his actions and his neglect of the war. Zhao suffered a great defeat. This event became a typical example used to describe overreacting to minor issues and ignoring larger problems.
Usage
用来形容对一些小事情反应过度，夸大其词，不顾大局。
Used to describe overreacting to small matters, exaggerating, and disregarding the bigger picture.
Examples
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他为了这点小事大发雷霆，真是小题大做。
ta weile zhe dian xiaoshi dafa leiting,zhen shi xiaotidazuo.
He made a fuss over such a trifle.
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这件事本来很小，他却小题大做，弄得沸沸扬扬。
zhe jianshi ben lai hen xiao,ta que xiaotidazuo,nong de fei fei yang yang
He made a mountain out of a molehill about this matter.