Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
这个盆地四周群山环绕,污染物不易扩散。Zhège péndì sìzhōu qúnshān huánrào, wūrǎnwù bù yì kuòsàn.This basin is surrounded by mountains on all sides, so pollutants do not disperse easily.
这个盆地很平坦,适合种稻米。Zhè ge péndì hěn píngtǎn, shìhé zhòng dàomǐ.This basin is very flat and suitable for growing rice.
夏天,盆地里又闷又热,空气很不流通。Xiàtiān, péndì lǐ yòu mēn yòu rè, kōngqì hěn bù liútōng.In summer the basin is stuffy and hot, with little air circulation.