Ah Guang was so shocked that he didn't notice Xu Youning's absorbed in her machinations at all.

Many years later when Ah Guang recalled the conversation with Xu Youning, he only felt a deep regret.

If he had known and trusted Xu Youning more, if he had observed her more carefully, he would have noticed that Xu Youning was just pretending in front of him.

If he had understood that Xu Youning was just pretending, what happened next... wouldn't have been ...