Only Those Who Do Their Math Will Earn Money

"Fang Ping, you've improved again. Does this mean that you have 520 credits now?" 

Old Man Li was full of bonhomie, chortling, "You've achieved Rank-2, you should have received your 100 credits…"

Fang Ping interrupted, "Instructor Li, you even know I have 520 credits. With so many students here, do you really monitor everyone's credits?"

Old Man Li protested, displeased by the implication, "Let's put it this way. As the instructor in charge of the logistics department, I must have a grasp of basic information such as this!"

Fang Ping was rendered speechless. After a while, he asked, "Instructor, do you still have Body-honing Pills here?"

"Yes! Of course I do!"

Old Man Li perked up instantly. Fang Ping was indeed an excellent customer!

He wanted to buy pills for which there was practically no demand!