念旧真是个坏习惯
[niàn jiù zhēn shì gè huài xí guàn]
This internet name suggests a habit or preference for recalling or holding on to the past which is considered not good. In China, 'Niɑnjìu' usually refers to nostalgia for former loves or friendships. The owner of this name may consider that this tendency to dwell on old times sometimes affects their current life and growth negatively.