怯懦的躲在暗处
[qiè nuò de duŏ zài àn chŭ]
This phrase directly translates into 'Cowards hide in the dark'. A netizen with such ID may have introverted or fearful personality. Or he might just be trying out an introvert image. The background of the coward might come out during his experience where he has made efforts to overcome shyness.