Legend has it that in the Himalayas, there is such a giant creature as the "Night Emperor", whose whereabouts have been found many times in the Himalayas for thousands of years. The creature walked upright, taller than an ordinary ape. Biologists suspect that the evolution of ancient humans to modern humans is missing.

Although there is no physical object, there will be incidents of snowman sightings every few years
In the Himalayas of Nepal, locals believe that a 3-meter-tall, half-human, half-ape snow monster lives on the mountain, which is extremely powerful, walking upright in the forest and on the snow, walking upright on weekdays, but crawling and running when attacked.
Indians who once lived at the foot of the Himalayas claimed to have seen the legendary Snow Monster and picked up the snow monster's hair. There are also many local legends about snowmen, such as the night emperor is shy, but very "lustful": the male night emperor will be poor when he meets a woman? On the contrary, if a man meets a female night emperor, he will not escape the fate.
The United Kingdom reported in 2002 that scientists had conducted a DNA analysis of a clump of hair found on a tree in the Himalayas of Bhutan and concluded that "the hair does not belong to the DNA of any animal that has been established."
Coincidentally, Russian scientists have done similar tests, and the results have given even more surprising conclusions: "These hairs are neither primates nor human." They believe that this is an animal hair that is very close to humans, and is also a close relative of chimpanzees. ”
Another story of a snowman saving lives takes place in 1938. Captain Ovigu, the curator of the Victoria Memorial in Calcutta, was traveling alone in the Himalayas when he was suddenly hit by a strong snowstorm, and the strong snow light stabbed him from opening his eyes, and he suspected that he was suffering from snow blindness. With nothing to do to call for help, Ovigu could only wait for himself to turn into a stiff corpse.
Just as he was close to death, he felt that he was covered by an animal nearly 3 meters high, saving his life. Slowly, his consciousness became clear, and the general animal mysteriously disappeared again, leaving a smell like a fox before leaving.
In 1848, Sanda of Xigong Village, Metuo County, Tibet, China, was captured and killed by a snowman, and the smell left on him was foul-smelling.
In 1951, the British Mount Everest mountaineering team took the first photo of the snowman's clear footprints. The footprint, left on a thin layer of snow on the hard ice surface, is 31.3 cm long and 18.8 cm wide, with a thumb wide open outward.
In 1960, Edmund Hillary once again organized an expedition with the famous writer and adventurer Desmond Doug. They brought millions of dollars worth of equipment, and Hillary even received a piece of the yeti's hair scalp (note: it was later confirmed that it was forged with an antelope skin) from the lama at the temple, as well as two pieces of fur from other parts of his body.
Himalayan snowmen may be descendants of ancient polar bears
DNA analysis by Bryan Sykes, a professor of genetics at the University of Oxford, showed that the creature known as the Yeti was the offspring of an ancient polar bear. Sykes compared hair sample DNA from two mysterious Himalayan animals with data from the animal's gene pool.
He found that they shared genetic fingerprints with the jawbones of polar bears found in the Norwegian Arctic Circle, which is at least 4,000 years old. Tests have shown that the mysterious creature is not related to the modern Himalayan bear, but rather a direct branch of prehistoric animals, Sykes said.
This may be a new species, and it may be a hybrid between polar bears and brown bears.
Chinese hetologists believe that the Yeti are descendants of great apes. He compared the footprints of the yeti to the footprints of apes and thought that the yeti were more like apes. Legend has it that the snowman walks upright and crawls when frightened – much like an ancient ape.
He speculates that the ancient great ape did not really become extinct, and its descendants lurked between the snowy mountains and ice peaks of southeastern Europe and Asia. Become a mysterious snowman. But they don't have the function of language, they only make vague calls. As a result, they don't seem to have entered the threshold of humanity.
Some scholars deny the existence of the snowman, believing that the footprints of the legendary snowman may have been the footprints of bears or the falling rocks on the mountain after the snow melted. The Sikkim government has organized a special expedition to visit the foothills of Gancheng Jiafeng, the world's third highest peak that is said to be frequently inhabited by snowmen, but found nothing.
In 1959, an American snowman expedition also spent a month and a half in Nepal and found no traces of a snowman. So, are the reports or even scientific investigations about the snowmen in the countries and regions mentioned above lie? Obviously not.
In short, the mystery of the snowman, like the mystery of Bigfoot, is both unbelievable and feels bad to dismiss easily. Does it also fall under the category of "hypothetical science"? Maybe.