Looking at Zhang Yu's 3.21-level physical strength, He Dayou's eyes were filled with disbelief.
He couldn't believe that despite spending so much money and training so hard every day, Zhang Yu had surpassed him by such a large margin.
In his heart, he roared, "How is this possible? How could this happen?"
"What exactly has Zhang Yu done? Why has his physical strength improved so much more than mine in just one month?"
"Is it some new drug or technology? But where did he get the money?"
Beside him, Lan Ling's gaze also sharpened.
He thought to himself, "Has Zhang Pianpian intervened behind Zhang Yu's back? How could there be such a significant improvement? What exactly has that woman done? Did she use the immortal techniques from White Dragon High School?"
Wang Hai was even more curious about how Zhang Yu had made such a huge leap in progress.
"Which pharmaceutical company? Which company's new technology? Are they trying to promote a new product through Zhang Yu?"
He carefully observed Zhang Yu and noticed that there were no needle marks on his temples or the usual injection sites on his arms.
According to common sense, a high school student like this didn't seem like a body-refining expert.