无事献殷勤，非奸即盗 (無事獻殷勤，非姦即盜) wú shì xiànyīnqín, fēi jiān jí dào

wú shì xiànyīnqín, fēi jiān jí dào phrase one who is unaccountably solicitous is hiding evil intentions
Domain: Proverb 谚语
Notes: (CC-CEDICT '無事獻殷勤，非姦即盜')