Tā shēngzhí hòu biàn de ángshǒu-tiānwài, mùzhōngwúrén.
After his promotion he became haughty and looked down on everyone.
Tips
usage
Almost always used negatively now. It pictures someone with their nose so high in the air they can't see anything around them. Often paired with 目中无人 ('sees no one in their eye').