Subject + 流行 / 流行 + 的 + Noun
流行 (liúxíng) means "popular" or "trendy," describing something that is currently fashionable or widely adopted. It can function as both a verb and an adjective. As a verb it means "to be in vogue," and as an adjective it describes things that are currently widespread.
这种发型最近很流行。
Zhè zhǒng fàxíng zuìjìn hěn liúxíng.
This hairstyle has been very trendy lately.
短视频在年轻人中间特别流行。
Duǎn shìpín zài niánqīngrén zhōngjiān tèbié liúxíng.
Short videos are especially popular among young people.
这首歌去年非常流行,到处都能听到。
Zhè shǒu gē qùnián fēicháng liúxíng, dàochù dōu néng tīngdào.
This song was very popular last year; you could hear it everywhere.