Find an unsolved mystery, key words: canyon, war, echo ...

1800 years ago, the ghost of fierce fighting explored the "ghost" of the manger.

One night, the sky was covered with dark clouds and a heavy rain was coming. Seeing this, Li Qiaobao, who works in Shalin Scenic Area, hurried down the mountain. But just as he walked into the valley, there was a loud noise in his ear.

Staff: The sound of chains and iron jingles.

The scene in the short film just now is not a fictional plot, it is real. This is a peculiar natural phenomenon that happened in the famous Shalin scenic spot in luliang county, Yunnan Province, China. Since the end of 1980s, residents living near Shalin Scenic Area can often hear the sound of weapons collision and horse neighing in a deep valley, which is similar to the sound in short films. They call this strange phenomenon "Yin soldiers crossing the road". The appearance of strange sounds is widely circulated in the local area. But today, no one can say clearly what this strange sound is. The villagers said that all this was related to a war 1800 years ago.

At the end of the Three Kingdoms, Zhuge Liang led his troops south to Lvliang to quell the rebellion of the southern minorities. One day, the Shu army and the confederate army fought at the war horse slope. Meng Huo, the king of Nanman, specially invited King Mulu, a master of Banana Cave who knows magic, to help out. King Mulu, who came to the war horse slope, ordered his officers and men to dig two mountain roads less than 40 meters long and less than one meter wide, and led the Shu army here. After the horn sounded, butch, jackal, birds and animals came out with the wind. The Shu army retreated to the valley without resistance. But at this time, the accident happened. The Shu army suddenly lost its horse, and the Southern Army seized the opportunity to pursue it, causing heavy casualties. Since then, it has always been cloudy here.

This valley hidden in the dense forest was dug by King Muru, and people called it a manger. Now it is the only way for villagers to go up and down the mountain.

Interview with villagers: Most people dare not come. Sometimes when the evening comes, a large group of people spread the word, and some people are afraid to come.

Interview Guide: When picking firewood, you should kowtow below, which can bless you to pass through here smoothly.

Before the strange noise died down, another strange phenomenon appeared in the manger.

Interview with villagers: when the horse arrives here, it will be frightened and dare not cross it. If you kill it, it won't pass. It must go this way.

Even the horses are afraid to walk into the manger, and the villagers are even more afraid. Because they are worried that something else will happen here next.

Interview Guide: We use a magnet to excite it, and then we can hear the sound, the sound of horse impact.

Sure enough, strange sounds can be heard at night or late at night, and now they can be heard during the day. Strange phenomena followed, and an ordinary mountain road became more and more mysterious. It is rumored that the manger is haunted. The news spread quickly from the local area and attracted the attention of some experts.

Xu Hao Ming is a researcher at the Institute of Geology, Seismological Bureau of China. Since 1980s, he has entered the research field of earthquake prediction. During this period, he noticed many wonderful phenomena in nature, including the "haunted" incident that frightened the manger.

Interview with Xu, Institute of Geology, Seismological Bureau of China: Wherever it happens, it won't happen once. It always happens, and it happens under certain conditions, so I judge it is in rocks or soil.

And it won't last that long in the air.

From this point of view, the strange noise that the villagers heard is probably the sound of the war 1800 years ago. Can it be said that the manger has the function of recording?

The realization of human recording began in 1877 when Edison invented the phonograph. This recording method is to convert the sound into the vibration of the metal needle, and then burn the waveform on the tin foil. When the metal needle moves along the recorded track again, the left sound can be played back.

Is this it?