And today's additional surgery was scheduled very tightly; Tang Yuxin didn't even take a break before heading straight into the operating room. From start to finish, Gao Peng kept his face hidden, fearing that Tang Yuxin would recognize him. What if she refused to treat his father then?
Actually, he was being overly suspicious. Tang Yuxin was not as shameless as him. Right now, Gao Peng's father was just a patient, not an enemy—and even if he were an enemy, she would still treat him. Just like with Tong Shu from before, she didn't refrain from treating her. In the end, she still treated Tong Shu's injuries.
So even if she knew that this was Gao Peng's father, she wouldn't just abandon the situation and walk away.
Being human comes with its own moral code, and being a doctor naturally requires medical ethics.