层出叠见 Origin — Dong Chinese Dictionary

céngchūdiéxiàn

to emerge one after another

层層 céng

to pile up

(literary) To overlap; to pile one on top of another; repeated
出 chū verbnoun

to appear

to appear; to manifest; to show; to become visible
叠疊 dié

to repeat

(bound form) Repeated or recurring; to happen over and over again
见見 xiàn adjective

to appear

(literary) to appear; to show; to become visible