In the room on the second floor of the bar, Bluce took out a sealed bag from his pocket with a piece of hair inside.

'Help me do a DNA test.' Bluce said to his doctor friend Lu Jin, 'Compare it with Lan Da.'

Lu Jin was startled and confused. He put it in his briefcase.

Bluce asked in a deep voice, 'Is it possible for a child to undergo bone marrow transplantation?'

Lu Jin asked suspiciously, 'How old is the child?'

'About 6, 7 years old.'

'Impossible, even ...