Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
最近菜价浮动很大,今天贵明天便宜。Zuìjìn càijià fúdòng hěn dà, jīntiān guì míngtiān piányi.Vegetable prices have been fluctuating a lot lately: expensive today, cheap tomorrow.
工资里有一部分会随业绩上下浮动。Gōngzī lǐ yǒu yí bùfen huì suí yèjì shàngxià fúdòng.Part of the salary moves up and down with performance.