Tā bèi xiàshǔ tuī shàng tái, yǒudiǎn huángpáojiāshēn de yìsi.
He was pushed to the top by his subordinates — a bit of a 'yellow robe draped on him' situation.
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history
From 《宋史·太祖本纪》. In 960 CE at Chenqiao (陈桥), generals threw a yellow robe over Zhao Kuangyin while he was ostensibly asleep and hailed him emperor, founding the Song dynasty. Yellow was the imperial color; being 'robed' in it = being made emperor.