C19 The headmaster invite a guest to congratulate him

After Ruan Zhenzhen heard it, his heart thumped once. He fiercely glared at Wang Hongxia for a moment, and promptly said to Han Yichen: "I'm sorry, genius doctor. I was in too much of a hurry earlier, I forgot to give you the key, and made you wait here for too long."

Han Yichen smiled and did not speak.

He was waiting for Ruan Zhenzhen to give him an explanation