Nà duàn lìshǐ yǐjīng jiǔyuǎn, hěn shǎo yǒu rén jìde le.
That period of history is long past; very few people remember it.
Tips
usage
久远 describes temporal distance into the past. It often collocates with 历史 (history) or 年代 (era). Compare 遥远 which more commonly describes spatial or abstract distance.
