chapter 334 What is trying your best?

"Doctor Campbe, thank you so much! Thank you for saving my uncle's life! Really, thank you so much!" Liu Zhengliang desperately grabbed Harbinger Campbe's hand and kept thanking him, repeating thank you over and over again. At this moment, he didn't know what to say except these two words. Apart from these two words, he didn't know how to express his gratitude to Harbinger Campbe. His mind was blank, completely overwhelmed by this sudden great joy and happiness. Just a moment ago, when he...