Wan Er

History
The girl was called Wan Er, both her parents had died, and Su Yi met her accidentally on the streets 10 years ago. He pitied the lonely girl, brought her home and gave her the name Wan Er, and kept her at his side.

In Su Yi's heart, he had always treated her as if she was his real younger sister, but the little girl was stubborn and only viewed herself as a maid.

Later on, Su Yi officially adopted her as his sister in front of the whole family.