It was to better differentiate his works and to better protect his privacy. Pen names could be used to represent culture, preferences, etc. It could also make the work more unique and personal. There were certain techniques and reasons for creating a pen name. Some were like " Sun Wukong,"" Lin Yutang,"" Lu Xun," etc. This way, the work could be more naturally associated with the author, and it could also avoid confusion and confusion caused by the same name or similar names. A pen name could also help. For example, one would use his real name in a publishing house or market. This would make the work more recognizable and also avoid confusion and confusion caused by the same or similar real names. Distinguishing works and maintaining the same could also make the works more unique and personal.