to conform to what one perceives to be the majority view
to follow the herd
Definitions (粵典–words.hk)
語句
聽完人哋點講,自己冇求證就跟住噉講 to echo the views of others, lacking a view of one's own; literally: "say what everybody says"
你應該查清楚事情嘅真相,唔可以人云亦云。
你应该查清楚事情嘅真相,唔可以人云亦云。
nei5 jing1 goi1 caa4 cing1 co2 si6 cing4 ge3 zan1 soeng3, m4 ho2 ji5 jan4 wan4 jik6 wan4. You should find out the truth instead of repeating others' words blindly.
Definitions (Wiktionary)
phrase, idiomatic
to say what others say; to follow the herd