形容詞
重記得過去嘅人同事，昔日嘅情誼一直擺喺心裏面 keeping old friendship and the old days in mind
佢個人好念舊，記得晒小學同學啲名！
佢个人好念旧，记得晒小学同学啲名！
keoi5 go3 jan4 hou2 nim6 gau6, gei3 dak1 saai3 di1 siu2 hok6 tung4 hok6 di1 meng2! He is a person who keeps all the memories of old days and old friendship in his mind, he can remember all the names of his primary school classmates!
Definitions (Wiktionary)
verb
to remember and cherish people and things from the old times
Examples (Tatoeba—Mandarin-English)
Mandarin
在怀念旧日时光的时刻，我们可能往往想起童年像是有著几乎完整幸福的一段时期。
在懷念舊日時光的時刻，我們可能往往想起童年像是有著幾乎完整幸福的一段時期。
zài huái niàn jiù rì shí guāng de shí kè ， wǒ men kě néng wǎng wǎng xiǎng qǐ tóng nián xiàng shì yǒu zhù jǐ hū wán zhěng xìng fú de yī duàn shí qī 。
In nostalgic moments we may tend to think of childhood as a time of almost unbroken happiness.