Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
他听完噩耗,便一头扎进档案室,谁也劝不住。Tā tīng wán èhào, biàn yìtóu zhā jìn dàng'ànshì, shéi yě quàn bù zhù.After hearing the bad news, he plunged straight into the archive room, and no one could dissuade him.
小猫睡觉的时候,喜欢一头靠在枕头边。Xiǎomāo shuìjiào de shíhou, xǐhuān yìtóu kào zài zhěntou biān.When the kitten sleeps, it likes to rest one end against the pillow.
为了准备考试,她一头扎进图书馆,每天学到深夜。Wèile zhǔnbèi kǎoshì, tā yìtóu zhā jìn túshūguǎn, měitiān xué dào shēnyè.To prepare for the exam, she threw herself into the library, studying late every night.