Mao era Reported sightings of apemen increased during the 20th century, prompting small scientific investigations in the 1950s and 60s. The first such expeditions focused more on the
yeti, a similar apeman cryptid from
Tibet, funded by the Soviet Yeti Research Commission. The
Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) headquartered in
Beijing followed suit and included the yeti as part of its survey of
Mount Everest in 1959. Prominent
paleoanthropologist Pei Wenzhong communicated to Soviet colleagues a small collection of similar apeman reports across China. In 1962, another prominent paleoanthropologist, Wu Rukang, led an investigation of reports from the
Xishuangbanna Dai Autonomous Prefecture in the
Yunnan Province, but dismissed them as a misidentified
gibbon. Separately, Professor Mao Guangnian linked the yeti with the yeren. His interest in the topic began when he heard his colleague Wang Zelin's story of an apeman shot dead in 1940 while in the field on behalf of the
Yellow River Water Control Committee. During the
Mao era (1949–1976) under chairman
Mao Zedong, fervent government campaigns aimed to squash superstitious beliefs and to quell debates surrounding mysterious apemen. They believed stories of yeren, ghosts, and spirits would impair productivity, such as by scaring farmers from tending to their fields, and circulating such stories were sometimes punishable offenses. Scientific interest quickly dwindled and Guangnian became one of the only scientists researching the yeren. He used primarily recent scientific reports and ancient literature as opposed to contemporary eye witness accounts. Other scientists, such as Pei, ascribed apemen testimonies to scientific illiteracy and strong superstitious beliefs among villagers in these remote areas, though they remained supportive of further study. Guangnian, nonetheless, argued that, by studying yeren, he could replace superstitions with scientific fact. He speculated yeren are the source of Chinese ghost and spirit folklore, much like how
manatees allegedly inspired some
mermaid stories. Soviet historian
Boris Porshnev suggested these apemen are a relict population of
Neanderthals, but Guangnian believed the yeren were far too primitive, more likely a descendant of the giant Chinese ape
Gigantopithecus.
Post-Mao "yeren fever" in the
Hubei Province In 1974, historian Li Jian, the vice secretary of the Prefectural Propaganda Department of Shennongjia recorded testimonies from locals regarding the yeren, the oldest occurring in 1945. This earned Li the nickname "The Minister of Yeren". His work attracted the attention of Liu Minzhuang, a professor at
East China Normal University, as well as several IVPP scientists, in 1976. As the Mao Era ended on the downswing of the tumultuous
Cultural Revolution, the taboo against superstitions diminished, and popular Western works regarding the yeti and the similar North American
Bigfoot were translated into Chinese. Coupled with Li and Liu's work and increasing commercialization with newly wrought publishing freedoms, interest in apemen surged as "yeren fever" took hold. In subsequent years, Liu would become the most prominent worker on the yeren, earning the nickname "The Professor of Yeren". In 1977, Zhou Guoxing along with military personnel, zoologists, biologists, and photographers launched a yeren expedition in Shennongjia on behalf of the
Chinese Academy of Sciences (though the group size was probably counterproductive, generating too much noise). Subsequent expeditions comprising scientists, technicians, government officials, and local villagers collected alleged footprints, hair samples, and sightings of the yeren, published in scientific journals, pop science magazines, and newspapers. Yeren hunts effected an unprecedented involvement of untrained laypeople, and was by-and-large fueled by
citizen science. In 1981, the China Wildman Research Society formed with the help of the famous Chinese paleoanthropologist
Jia Lanpo, and offered a cash reward for a yeren body,
¥5,000 dead and ¥10,000 alive (at the time,
$1,750 and $3,500). Much like Guangnian, the majority of scientists worked to prove these apemen were undiscovered early offshoots of humanity rather than supernatural entities, while a minority maintained they were misidentified ordinary animals. The most popular candidates include a descendant of
Gigantopithecus or an undiscovered Chinese variant of the African
Paranthropus robustus (at the time considered to be gigantic like
Gigantopithecus). Another notable hypothesis, though not the most popular among scientists, was that the yeren are a backwards and unevolved race of modern humans, often supported by
racist comparisons with local ethnic minorities. In 1984, local Li Mingzhi, when detailing his yeren sighting, remarked that at first he, "thought it was a local
Wa woman climbing the mountains to collect pig food." The yeren being a far removed human relative would have confirmed several popular Chinese theories of the time, which depended strongly on
Marxism. Most notably is
Friedrich Engels' concept of "labor created humanity", because, despite being
bipedal with hands free to labor, the yeren did not organize into a laborious society and remained evolutionarily stagnant. It would also support the
Out of Asia theory (that modern humans evolved in Asia) which was being overturned by the now-popular
Out of Africa hypothesis. Consequently, hypothetical yeren society was often characterized using
Marxist feminism, a
polygynous and
matriarchal one. Yeren were also sometimes ascribed feelings of love and familial bonding; for example, in 1976, a pregnant yeren was rumored to be searching for her "husband" in Shennongjia. By the 1980s, whole books about the yeren were being published, and a substantial collection of such literature has since amassed. Some yeren hunters — generally men — dedicated their lives to the chase, leaving their families behind. In 1981, Li received funding by the Chinese Anthropological Society to found the Chinese Yeren Investigative Research Association. Four of their exhibitions that decade garnered audiences upwards of 400,000.
Conclusion s. As all expeditions had failed to turn up convincing evidence, scientific interest plummeted by the late 1980s. Alleged bodies, hairs, and footprints actually came from various known animals, including humans,
Himalayan brown bears,
Tibetan blue bears,
Asian black bears,
macaques,
goral, and
serow. Purported "monkey boy" skulls, supposed evidence of yeren/human hybrids, actually belonged to fully human children who suffered
spinocerebellar ataxia. Since they usually are reported to have occurred at a distance, eyewitnesses may have misidentified bears,
gibbons, and
monkeys. Additionally, many eyewitness accounts were likely completely fabricated or embellished. Following the
1989 Tiananmen Square protests and massacre, the government began constricting private organizations and discouraged the ideas and observations of lay peoples (including on scientific matters). Concurring with this trend, in 1994, Li's Yeren Association was subsumed by the
China Association for Science and Technology (though it is largely funded by members instead of governments), and was renamed the Strange and Rare Animals Exploration and Investigation Committee. Further study is still not ubiquitously reproved in Chinese academic circles, though mainstream academia does not consider the yeren to be real. One of the only academics left attempting to prove the creature's existence is American anthropologist
Jeffrey Meldrum. ==In popular culture==