Confessions made by 45 Japanese war criminals tried and convicted by military tribunals in China after World War II (WWII) were published online on July 3.

Handwritten confessions, along with Chinese translations and summaries in both Chinese and English, have been published on the website of the State Archives Administration, the administration's Deputy Director Li Minghua announced at a press conference.

The archives constitute irrefutable evidence of the heinous crimes committed by Japanese imperialists against the Chinese people, according to Li.

"Japanese Prime Minister Shinzo Abe disregards history and human conscience, and has been openly trying to claim black is white, misleading the public, and beautifying Japanese aggression and its colonial history since he took office," Li told reporters. "This challenges the post-WWII international order."

Li added that his administration made the war criminals' confessions available online before the 77th anniversary of the July 7 incident to commemorate history, cherish peace and prevent the reliving of such historical tragedies, Li added.

The July 7 incident, commonly known as the Marco Polo Bridge Incident in English, occurred in 1937 and marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years.

Earlier on June 30, the Museum of the War of the Chinese People's Resistance Against Japanese Aggression in Beijing also launched a digital library of relics from the war via Baidu Baike, the online encyclopedia of China's top search engine Baidu.

The program features photographs of artifacts preserved in the museum, including diaries, letters and guns, among other items.