In part 2 of this detective story, Detective Li and his assistant Xiao You obtain a coded message from an infamous drug dealer. As usual, Li's problem-solving skills are up to the task. Can you keep up? 上集答案：凶手就是那位撒谎的助手，他将冰刀藏在热水瓶中带进了浴室，并在作案后将冰刀丢进浴池的热水中将凶器融化掉。因为冰刀是低温的，所以也造成了伤口周围呈紫红色。
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