A special exhibition exposing the atrocities of Unit 731, a notorious Japanese germ-warfare unit during World War II, reopened to the public on December 13 at the site of the unit's headquarters in Harbin, capital of Heilongjiang Province in northeast China.

The event features over 2,000 exhibits, including files, documents and other written materials related to Unit 731, many of which are newly discovered items, all documenting the invaders' crimes. As December 13 marks National Memorial Day for Nanjing Massacre Victims, a ceremony was held at the site for visitors to pay tribute to the victims.