Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
工程队连夜疏通排水管道,否则整片街区都会被积水淹没。Gōngchéngduì liányè shūtōng páishuǐ guǎndào, fǒuzé zhěng piàn jiēqū dōu huì bèi jīshuǐ yānmò.The engineering crew worked through the night to clear the drainage pipes; otherwise the whole neighbourhood would have been flooded.
下雨前要疏通沟渠,免得院子被水淹。Xiàyǔ qián yào shūtōng gōuqú, miǎnde yuànzi bèi shuǐ yān.Before the rain you need to clear the ditches, so the yard does not get flooded.
他多方疏通关系,事情很快就办成了。Tā duōfāng shūtōng guānxi, shìqing hěn kuài jiù bànchéng le.He smoothed out the needed connections in every way, and the matter was soon settled.