knowing sb by their reputation can't compare to meeting them in person (idiom)
Definitions (粵典–words.hk)
語句
與其淨係聽人講某個人點樣,不如親身見真人,印象仲加深刻而確切;通常有欽佩嘅意思 to know someone by reputation is not as good as meeting face to face (usually with a connotation of admiration)
網上結識咁耐,今日終於出嚟一聚,真係聞名不如見面。
网上结识咁耐,今日终于出嚟一聚,真系闻名不如见面。
mong5 soeng6 git3 sik1 gam3 noi6, gam1 jat6 zung1 jyu1 ceot1 lai4 jat1 zeoi6, zan1 hai6 man4 ming4 bat1 jyu4 gin3 min6. We've known each other as online acquaintances for a long time, and I feel better having finally met face-to-face today.
Definitions (Wiktionary)
proverb
to know someone by reputation is not as good as meeting face to face