Originally, it should have been the time when his parents accompanied Tang Xiaofan in peace, but he didn't fulfill his responsibility. Tang Ke'er alone with Tang Xiaofan must have been very hard work. At this time, he was not only unaware, but he was also blaming Tang Ke'er for leaving without saying a word.
Tang Ke'er and Tang Xiaofan were not known to Dou Shengming in any aspect of their lives, and they were completely absent from those years.
He didn't do what a father should do, didn't grow up with Tang Xiaofan, and didn't even know that Tang Xiaofan existed.
Thinking of this, Dou Shengming blamed himself. He had always let Tang Xiaofan down, even now.
Previously, he didn't know Tang Xiaofan's existence and didn't stay by his side. But now, as his father, Dou Shengming wanted Tang Xiaofan to bear these things for him, which were not things his age should be able to bear.