His name is Zi Han

"...buried underneath this tree."

DX's mind kept repeating Kai Xin's words. He could not help but stare blankly at her as he tried to digest her words. This was out of his expectation and he did not know whether it was a cruel joke made by Kai Xin to throw him off.

"What did you say, Kara? Zi Han is buried under this tree?" asked DX nervously.

When he reached out for her, she took a step back until her back was against the tree.

"Kara?"

She was looking at her shoes as she snapped, "Don't touch me! You want to know so I am telling you."

Unable to face him, she turned around so that she was facing the tree instead. She placed her hand on the tree before she started telling him about Zi Han.

"12 years ago, I killed my own son."

....

12 years ago, as Young Kai Xin was laying down on the cold metal bed in the small operating theatre, she heard the doctor talking to her and turned to face the man.