Japan's infamous Unit 731, a covert biological and chemical warfare unit during WWII, conducted unimaginable experiments on thousands of Chinese people. This video uncovers the horrifying truth.

Live Vivisections: Human subjects were dissected alive without anesthesia. Weaponized Bacteria: Over 20 types of biological agents were produced - two tonnes of bacteria daily for testing. Staggering Death Toll: Over 300,000 Chinese citizens were killed. Lingering Pain: Abandoned chemical weapons still harm people today.

It was a state crime, not just an individual act. A chapter of WWII history that must never be forgotten. Catch the full story with CGTN's Gasthoori Manickam.