Leaning against the wall, Tracy looked to one side and said after thinking for a while, "In the situation of Archer Family at that time, my brother urgently needed a large sum of transit funds. If my mother didn't die, he could not get the money. That's why he has a bad idea."

"How did you know that?"

"I overheard a conversation between him and a doctor. It seemed that someone found a batch of unqualified urine tubes in the hospital as a patient had been infected, so those urine tubes were ready to be returned. As a result, my brother asked the doctor to find an inferior urine tube...