Found in Japan's Unit 731 Biological Experiment Lab in China: "US Turns a Blind Eye in Exchange for Information Sharing"

Underground Biological Laboratory in Anda County, Heilongjiang Province, China
"Largest Scale Laboratory, New Evidence of Japanese War Crimes"

China has discovered an underground biological laboratory used by the Japanese Army's Unit 731 during World War II.

On the 25th (local time), the South China Morning Post (SCMP) reported that Unit 731, under the Japanese Kwantung Army, conducted biological experiments in an underground laboratory in Anda County, Heilongjiang Province, northeastern China, from 1932 to 1945. Unit 731 was a bacteriological warfare unit that referred to humans as "Maruta," meaning logs, and carried out various biological experiments.

The US Turned a Blind Eye to Biological Experiments for the Cold War... Developed Biological Weapons Using Unit 731 Data

At the "Exhibition Hall of Crimes Committed by the Japanese Invading Army Unit 731" located in Harbin, China, various experimental scenes conducted on living people by the Japanese imperial forces are recreated. The scene shows Unit 731 members performing frostbite experiments on test subjects.
[Photo by Yonhap News]

The Anda laboratory was the largest and most frequently used experimental site among Unit 731 facilities. China views this laboratory as new evidence to expose Japan's war crimes. The investigation, which began in 2019, was published in China's archaeological academic journal, Northern Cultural Relics.

According to records, Unit 731 deliberately infected prisoners with deadly diseases to test biological weapons and conducted various cruel biological experiments. Some experiments were carried out in underground bunkers designed to control the spread of infectious diseases.

After Japan's surrender, the United States granted immunity to the leaders of Unit 731 and denied the horrific experiments conducted on prisoners of war and civilians, including men, women, children, and infants.

Declassified documents later revealed that the biological experiment data from the Japanese military was shared with US authorities in exchange for immunity from war crimes prosecution. The data was transferred to the US Army research center at Fort Detrick and used to develop biological weapons during the Cold War.

In the 1990s, it was revealed that US government officials were aware of the biological experiments and used the data at Fort Detrick for biological warfare development, sparking public outrage and demands for accountability from both Japan and the United States.

Largest Laboratory... Testimonies of "People Tied Up and Exposed to Anthrax"

The underground research facility of the Japanese Army's Unit 731, notorious for its biological experiments during World War II, was discovered in northeastern China, South China Morning Post (SCMP) reported on the 25th.
[Photo by SCMP]

Experts believe that human subjects who contracted diseases or were exposed to chemical substances were brought here for observation and dissection.

The experimental site was surrounded by barbed wire, and traces of a runway, warehouses, barracks, and wells were found in the aboveground facilities. However, Unit 731 destroyed most of the aboveground buildings in August 1945 to eliminate evidence.

To maintain secrecy and protect from air raids, the laboratory, observation rooms, dissection rooms, and detention rooms were constructed underground.

Building used by Unit 731 in China during World War II [Image source: YTN News report capture]

Biological experiments reportedly included dissection of living subjects, syphilis and gonorrhea tests, and exposing subjects to deadly diseases. Researchers in this unit developed methods to weaponize plague, anthrax, cholera, and typhoid.

Sakaki Hayao, who served as the commander of the Linkou area of Unit 731, testified at the Shenyang Special Military Tribunal in 1956 that "extremely cruel" experiments were conducted at the Anda base just months before Japan's surrender. He stated, "I witnessed people tied to wooden posts being exposed to anthrax."

Meanwhile, Chinese archaeologists said that understanding of Unit 731's underground facilities is still at an early stage, and additional excavation work is needed to fully grasp the scope of the site. They expect that further excavations will uncover more evidence of the brutal biological experiments carried out by the Japanese military.

This content was produced with the assistance of AI translation services.