白子画花千骨
[bái zi huà huā qiān gú]
These are names of two fictional characters from the popular fantasy romance series “Hua Qian Gu”: 白子画 (Bai Zihua), an aloof and mysterious mentor figure; and 花千骨 (Hua Qian Gu), his disciple. Adopting this as a pen name suggests the user is possibly a fan of the story or values its themes of devotion and destiny.