Who was the murderer of the last reunion of the evocation game?

According to the time line inventory, Qian Duoduo, who first appeared in the box by visual inspection, is the most suspect, but it doesn't rule out the possibility that someone drugged first and then hid. Combining the clues provided by Liang, there is a golden note on his collar. It can be judged that he entered the hotel at 1 1 when fireworks were set off in the lobby, and he was the first person to arrive at the hotel. The laxative may also be Liang's. Because of the particularity of the modus operandi (everyone needs to be anesthetized separately after leaving the private room), the timing of returning to the private room is more important. At present, it needs to be calculated according to the number of people entering the bathroom to judge that there is no one in the private room. This modus operandi requires the murderer to be familiar with the hotel environment and box environment to ensure that no one else will enter the bathroom. Staff testimony can prove that both Liang (wearing a suit) and Bai Dong (wearing a sweater) have been to the hotel, so they are most likely to commit crimes, while the previous timeline inventory can confirm that Bai Dong did not commit crimes.