C91

The old man's heart was already at ease, but he had heard the word 'but' after that, the doctor did not continue. This was a little too scary!

"That... Doctor, this... What's going on? " With a hesitant tone, he said to the doctor. The doctor smiled and walked in front of Zhang Kai. He touched Zhang Kai's head and said with a smile, "This …"

As he said this