'Xù jiù' literally combines 'xù' (to narrate, recount) and 'jiù' (old, past), meaning to jointly recall shared memories—especially with people you haven’t seen in a long time. It carries warmth and intimacy, often implying nostalgia, affection, and continuity of relationship. Unlike casual 'catching up,' 叙旧 suggests depth: revisiting meaningful life events, school days, childhood neighborhoods, or past hardships and joys.

This verb is commonly used in informal and semi-formal settings—reunions, family gatherings, or coffee meetings with former classmates or colleagues. It’s rarely used for brief or superficial exchanges; rather, it evokes unhurried conversation, sometimes over food or tea, where time seems to slow down. While the characters are simple, the word itself is somewhat literary and carries emotional weight—it’s not used for routine daily updates, but for heartfelt reconnection.