Chapter 995 The Returnee's Notes 69
The sun sets again, the wind blows and the rain falls, green willows are shrouded in cold mist and spring sorrow.
But as spring turned to summer, the streets and corners of the small town were filled with people seeking respite from the heat. Xie Ning's test results put the principal and teachers at the school at ease.
Excitement followed, as they were worried that Xie Ning might fall behind in her studies. The principal specially arranged for Xie Ning's homeroom teacher and math teacher, Lao Qin, to give Xie Ning extra lessons.
Unfortunately, Xie Ning needed more time for self-study, so the tutoring plan fell through. However, because of his excellent exam results, Xie Ning gained more free time.
Because she spent very little time attending regular classes at school, she didn't have many friends; she could only exchange a few words with Qiu Tong'an and Xiao Liu.
Wherever there are schools, there will inevitably be one or two legends about ghosts and monsters. When Xie Ning first started school, she didn't think there was anything wrong with their middle school.
As they delved deeper into Taoist arts, they discovered that the location of their school was truly unfavorable. After all, what school would be built in front of a cemetery?
Because Xie Ning lived off-campus and had little interaction with others, she was unaware that the area behind the school was a cemetery. As the weather grew warmer, the school was also shrouded in rumors of ghosts and monsters.
Some students said they saw will-o'-the-wisps, which were eerily green and would chase after people, which was very scary.
Actually, this is not a strange phenomenon. Back in S City, Wang Heng and his group used so-called will-o'-the-wisps to fool people before, so when Qiu Tong'an mentioned this, Xie Ning explained it to her.
A pale blue or light green flame appears next to the grave, floating in the air. This is because the main component of human bones is calcium phosphate, which is composed of calcium and phosphorus.
After a person dies, the phosphorus in their bones is gradually released. Under the action of certain microorganisms, calcium phosphate undergoes a chemical reaction to form calcium phosphide, which in turn reacts with water to produce phosphine.
Phosphine is a colorless gas that is very easy to ignite spontaneously. It can ignite at around 38 degrees Celsius. It reacts chemically with oxygen to form phosphoric acid when it burns, and it emits a blue-green light, which is known as will-o'-the-wisp.
When a person moves, they move the air, and the phosphorescent flames may drift with the air, thus creating the phenomenon of phosphorescent flames chasing people.
At this point, even if junior high school students have learned some chemistry knowledge, their understanding is not deep enough, which is why they are frightened by such rumors.
In fact, such phenomena will become less and less common in the future. After all, people used to be buried in the ground, while cremation is more common now and in the future.
Although cremated remains are rich in calcium phosphate, they are usually stored in sealed containers, making it difficult for them to come into contact with water or other substances that can trigger a reaction, thus reducing the occurrence of phosphorescence.
Although Xie Ning's explanation put Qiu Tong'an at ease, the problem wasn't just about the will-o'-the-wisps.
"You don't know, someone died in that 104 building before!"
Qiu Tong'an lowered her voice, sounding mysterious, "They all say that a girl hanged herself in that dormitory before, and her vengeful spirit is still haunting her. Some people have even seen her at night. Now, everyone in that dormitory is clamoring to change dorms."
That's absolutely terrifying.
Who would dare to stay there?
"I remember the version that was circulated before was different..."
Xie Ning found it somewhat amusing. For students, they are at an age where they are curious about everything in the world, after all, there are so many things they don't understand.
So even a small thing can be blown out of proportion by them.
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