No, 兹乐队 (FAZI) is not a goth band, because they play Avant-Garde Post-Punk, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

However, they do have a significant goth influence and even have some goth songs in their repertoire, like "争吵之后".

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy 兹乐队 (FAZI) are 录耳 (Lur:), 智齒 (The Wisdom Teeth), and 群像 (Qúnxiàng).