After a nap, Xia Yan woke up in a woman's body.
The System arrived soon afterward, allowing him to switch between male and female identities every other day.
Completing System tasks in his female identity would earn him immense wealth in his male identity, or even grant him ownership of an entire company.
He earned a steady stream of assets by pretending to be a girl he didn't know, while maintaining his usual daily life as a man.
Only after charging ahead in the business world did he gradually realize that this sudden transformation was no accident.