Демнч:YiFeiBot

This user account is a bot operated by Zhuyifei1999 (talk). It is not a sock puppet, but rather an automated or semi-automated account for making repetitive edits that would be extremely tedious to do manually.
Administrators: if this bot is malfunctioning or causing harm, please block it.

This bot runs on Wikimedia Toolforge.
Administrators: If this bot needs to be blocked, please remember to disable autoblocks so that other WMF Toolforge bots are not affected.

Task: Global Interwikilink Removal. m:User:Addbot has a detailed explanation on this task.