Crime scene: 162 mystery solving puzzles to find out who the murderer is

Chapter 96 Black Spring
There are eight middle school students who meet for an outing in the deep mountains in spring, and finally find a deserted and sealed hut late at night.

So, they broke in, rested in the hut, and took out the food they had prepared, built a charcoal stove, and grilled there.

Suddenly, they found that there was no drinking water, so they recommended a bolder classmate surnamed Chen to fetch water.Classmate Chen went out in the dark and finally found the water source, but got lost.

The next morning, classmate Chen returned to the hut. He saw many policemen outside the hut, and the seven students inside were carried out. Everyone's faces turned black and they died. Student Chen was extremely frightened.

The police interrogated Chen and found that their team leader was a believer in the "Doomsday Cult", which has caused a lot of trouble in the city recently.

Did they all commit suicide because of this?Why can classmate Chen avoid bad luck?Is he suspected?

[Answer] The incident should be an accident, and no one is suspected.If a charcoal stove is fired in a sealed hut, carbon monoxide will be continuously produced, but if it cannot be circulated, the people in the room will be poisoned, and the poisonous gas is colorless and odorless, making it hard to guard against.Classmate Chen went out to fetch water, and finally escaped the disaster.The team leader is a follower of the "Doomsday Cult", but the disaster was not caused by him, but inadvertently fulfilled his wish of "collective suicide".Therefore, if you want to light a fire where you live, it is necessary common sense to maintain air circulation.

(End of this chapter)