Chapter 391 Uncertainty Looms

• Grandpa Si inquired, "Second, how is the progress on the artificial heart research?"
• "It's going well, but for specific details, you should ask the eldest brother. Grandpa, please be patient. I will check with my brother to see where he is at."
• Si Mubai witnessed Grandpa Si taking the initiative to ask for the first time. Normally, it was others pleading with Grandpa Si, and even if he agreed, he never rushed things unless it was a matter of life and death.