Liu Qingsong held his forehead, "If it really is poisoning, this matter has just become even more complicated!"
"How can we determine what kind of poison it is?" He Sizheng temporarily set aside distractions and focused his attention on the case, "To him, there was nothing more crucial than solving the case."
"Based on the state the body exhibited, I suspect the murderer used aconitum to kill. Death by aconitum doesn't leave distinctive traces during an autopsy; signs of asphyxiation are more apparent. It is essentially undetectable, which is why aconitum can be considered an essential medicine for murder," Ran Yan answered.
Liu Qingsong wiped the sweat from his temples, "Essential medicine... Are you joking?"
Ran Yan replied indifferently, "I'm stating the facts."
"So, you're saying that once poisoned by aconitum, the cause of death cannot be discovered?" He Sizheng asked, unwilling to accept this without question.
