According to the rules, one mistake meant he lost ten points. He would only be disqualified after three mistakes. He really could not comprehend how he ended up with zero marks.

"If it were just a regular mistake, I would not have given you zero points. But the problem is, you listed aconite as one of the ingredients, which reacts with the Fritillaria bulb in the medicine and becomes a deadly poison! If a doctor cannot even understand the difference between medicine and poison, what makes you think you can join the Stoneray Order? And this is the reason why I’ve given you zero points. Are you happy with my explanation?" the invigilator asked gravely.

"Of course not," Dustin answered.