My Online Girlfriend Has a Twin Sister

Eighteen-year-old Chen Yuan experienced the first love of his life, but it was an online relationship. His girlfriend was lively and cute, quirky and mischievous, and very good at making people happy. Chen Yuan thought she must also be an adorable girl in real life... As it turned out, when she appeared, she was wearing high heels, with an elegant and intellectual demeanor, and was his university professor?