作壁上觀 [－－－观]

Jyutping zok3 bik1 soeng6 gun1
Pinyin zuò bì shàng guān

Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    to stand back; to observe only and not take sides
    (syn.) 壁上观, 壁上觀