Restore the default state. According to the query of soul official website, within seven days after soul logs off, the screen name will be blank, and the related settings such as avatar, background and personal signature will be restored to the default state. So soul's nickname was changed to soüler after 7 days of cancellation because it returned to the default state. Soul is a product design based on interest map and gamification, which belongs to the virtual social network of a new generation of young people and was established on 20 16.