Xiao Shumiao is clearly his own biological son, yet after having him by his side for so long, he actually never saw it.
He regards this as the greatest humiliation of his life.
After acknowledging Xiao Shumiao, he had Gu Qingrun teach him human anatomy for a few days and specially studied the structure of the human body.
For many people, you can't see any resemblance just from the facial features.
But for someone with medical training, it's very easy to spot similarities between two people from certain characteristics of their skeletal structure.
Back then, everyone in the Gu Family, including Ye Xingbei, had already formed a fixed idea and firmly believed that Xiao Shumiao had absolutely nothing to do with the Gu Family or with him, so even if they saw a slight resemblance between him and Xiao Shumiao, they wouldn't take it to heart, let alone suspect a parent–child relationship.
But he was different.
As far as he knows, matching for a heart transplant is extremely strict.
