We must know that when he first came to the Medical Alliance as an Alchemy Instructor, apart from Ling Yuxuan, his alchemy skills were the best in the entire alliance.
He had been working in the Medical Alliance for ten years, and only advanced from the Fourth-order Primary Stage to the Fourth-order Middle Stage.
And those younger than him were progressing one by one, especially Gu Xiyue, directly surpassing him to become a peak fourth-order Pill Master.
How could he not be jealous? Now, Gu Xiyue suddenly mentioned his age, making him extremely furious.
"Indeed, I am old, and my alchemical talent is indeed not as good as yours, but why do you have to deliberately rub salt in my wound?" Ma Tao looked at Gu Xiyue with anger on his face.
