我在专心干我的事，他却向我找碴儿吵架。
Eg. I was attending to my business, but he picked a quarrel with me.
youdao
吹毛求疵找碴子或为了琐屑的原因而批评；
To find fault or criticize for petty reasons; cavil .
你真的很爱找碴耶。
You really love nitpick.
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