Two Chinese collectors are to stage an exhibition on Japan's invasion of China in Oakland, California, in September.

The exhibition is scheduled to last for one month before going on tour in major US cities such as San Francisco, Los Angeles, Washington DC and New York.

Co-organized by Tien-Wel Wu, an 81-year old historian on Japan's aggression in China at the Southern Illinois University, the exhibition is to be held in the Chinese Holocaust Museum of the United States.

A total of 918 pieces of evidence will be presented to let visitors review the 1894-1945 history: from the beginning of the Japanese invasion of China to its defeat in World War II.

The two collectors - Zhan Hongge and Yang Guang from Shenyang, capital of Northeast China's Liaoning Province - have contributed all 918 items to be displayed.

The figure 918 is used to commemorate the historical "9.18 Incident," an incident took place on September 18, 1931, which resulted in Japanese militarists' massive invasion in Northeastern China and later the whole country in 1937.

"We hope the exhibition can help visitors recognize history and avoid repeating mistakes," Zhan said.

Formerly a successful businessman, Zhan became a full-time collector of Japanese war crimes during the invasion years.

"This exhibition will also mark the 70th anniversary of the '9.18' Incident," added Zhan.

The 918 items, including munitions, photos, maps, currencies, bonds and newspapers, are chosen from roughly 10,000 items that Zhan and Yang own.

The 918 pieces of collections, originally created by the Japanese to commend its power of conquest, have become proof of Japan's war crimes.

Among the 918 items are some 400 photos taken by Japanese photographers recording in detail how the government sent 1.1 million soldiers to Northeast China during the 1904-05 period when Japan was declaring war on the Russians in China's territory. The pictures reveal how the Japanese army kept watch, carried ammunitions, camped, attacked the Chinese army and occupied cities such as Yingkou, Liaoyang and Haicheng.

Some 100 different bonds, stamps and stocks issued by the Japanese Government will also be shown to the public for the first time. On the securities, it marks in Chinese characters of China Accident Bonds of the Japanese Government.

A map also published by the Japanese Government shows the three provinces in Northeast China were divided into 19 provinces with Changchun chosen as overall capital.

The Chinese Holocaust Museum of the United States is temporarily located in Oakland and was first opened to the public last year.