Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
医院扩建急诊楼后,夜间排队时间才明显缩短。Yīyuàn kuòjiàn jízhěn lóu hòu, yèjiān páiduì shíjiān cái míngxiǎn suōduǎn.Only after the hospital expanded its emergency building did night-time waiting times clearly shorten.
学校准备扩建操场和食堂。Xuéxiào zhǔnbèi kuòjiàn cāochǎng hé shítáng.The school is preparing to enlarge the playground and the canteen.
工人们正在扩建这条老公路。Gōngrénmen zhèngzài kuòjiàn zhè tiáo lǎo gōnglù.Workers are widening this old highway.