Chapter 831: There's Hope for Tong Hua 2

Tong Hua hugged Burger and felt a little downhearted. However, he was really determined. "Daddy, Mommy, I don't want to undergo a heart transplant surgery."

The heart in his body had only merged into one with his body after many years. It had long become like his own. Even if it had harmful substances, he had already survived for many years. He did not want to take it out and did not want to experience the pain of being cut open again.

"Let's develop a blood serum," Ye Ling said calmly.

"Master, this… is really difficult. We have not found a breakthrough at all," Professor Ke said.