Time Travel, I Have a Super System!

In the bathroom of a rental house in a dilapidated residential complex, a sprinkler on the wall kept spraying water on a naked man lying on the ground. This man's name is Ding Shuang. He is 23 years old this year. His parents are dead and he has a younger sister but no house. My younger sister, Ding Fei, is 19 years old and is attending college in G city. Ding Shuang also came to G city to work to support her sister in college and take care of her. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.