攀龙附凤

pānlóng-fùfèng

[play up to people of power and influence; put oneself under the patronage of a bigwig] 龙, 凤: 比喻有权有势的人。 喻指为获名利而去巴结投靠有权有势的人

攀龙附凤, 驰骛之秋。 --《三国志·鲁肃传》