Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
他下楼时不小心扭了脚,只好请假休息一天。Tā xià lóu shí bù xiǎoxīn niǔ le jiǎo, zhǐhǎo qǐngjià xiūxi yì tiān.He accidentally twisted his ankle while going downstairs, so he had to take a day off to rest.
她扭过头去,假装没有看见我。Tā niǔ guò tóu qù, jiǎzhuāng méiyǒu kànjiàn wǒ.She turned her head away and pretended not to have seen me.
你用力扭一下瓶盖,应该就能打开了。Nǐ yònglì niǔ yíxià pínggài, yīnggāi jiù néng dǎkāi le.Twist the bottle cap hard and it should open.