Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
我孤陋寡闻,连这么有名的歌手都没听说过。Wǒ gūlòu guǎwén, lián zhème yǒumíng de gēshǒu dōu méi tīngshuō guo.I'm so out of touch that I've never even heard of such a famous singer.
他整天待在家里,对外面的新鲜事孤陋寡闻。Tā zhěngtiān dāi zài jiā lǐ, duì wàimiàn de xīnxiānshì gūlòu guǎwén.Staying at home all day, he knows very little about what's new outside.
多读书,多出去走走,才不会孤陋寡闻。Duō dú shū, duō chūqù zǒuzou, cái bú huì gūlòu guǎwén.Read more and get out more, and you won't be so uninformed.