上贼船 (上賊船) shàngzéichuán

shàngzéichuán noun to board a pirate ship; to associate with criminals
Domain: Idiom 成语
Notes: (CC-CEDICT '上賊船')

Contained in

• 误上贼船(誤上賊船) to mistakenly board a pirate ship; to embark on a hopeless adventure