小人得志

gāng qǔ dé yī diǎn chéng jì tā jiù yī fù xiǎo rén dé zhì de mú yàng zhēn ě xin

刚取得一点成绩，他就一副小人得志的模样，真恶心。

After a little success, he looks like a little man who has achieved something. It's disgusting.