Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
政府计划在汛期前向重点地区投放应急物资。Zhèngfǔ jìhuà zài xùnqī qián xiàng zhòngdiǎn dìqū tóufàng yìngjí wùzī.The government plans to place emergency supplies in key areas before the flood season.
这家公司最近在网上投放了很多新广告。Zhè jiā gōngsī zuìjìn zài wǎngshàng tóufàng le hěnduō xīn guǎnggào.This company has recently placed many new advertisements online.
春天,渔民在湖里投放了大量鱼苗。Chūntiān, yúmín zài húlǐ tóufàng le dàliàng yúmiáo.In spring, fishermen released large numbers of young fish into the lake.