More than 20 people from Europe and the United States recorded the atrocities and their documents have been preserved by UNESCO in its Memory of the World Register, Zhang said.
"The book portrays Japan as the victim of the war. The attempt to whitewash its role as the invader confuses right and wrong," Zhang said.
In interviews conducted by Xinhua in Tokyo, many tourists from around the world criticized the behavior of the hotel and said they will not choose to stay there when they travel.
"What I know about the massacre of Nanjing is that everybody seems to know that it happened. It was an appalling historical event and it was about Japanese imperialism at that time," an Australian visitor to Japan told Xinhua, requesting anonymity.
"Terrible things happened and the Japanese were 'crazy' at that time. They have to accept that it happened. Once you accept it happened, you can move on... hopefully, it won't happen again," the Australian said.
Another tourist, Nicole, told Xinhua that, "I wouldn't stay at that hotel if it's deliberately carrying literature trying to distort history."
Her partner James added, "I agree. I couldn't stand something like that. It's utterly horrible."
Chinese tourists are also strongly enraged at APA's behavior and have started boycotting the hotel.
"I think the behavior of the hotel is immoral, because history can't be denied. The Nanjing Massacre was a gross injustice inflicted by the Imperial Japanese Army and we must treat this fact fairly and objectively. We can't deny this part of history," a Chinese tourist, Xu Juxin, told Xinhua.
"I won't stay in such a hotel and we should all fight against it. I'll share this option with my family and friends," said Xu.
"I think we should report the behavior of this hotel to the Chinese media and let more people know... we should boycott this hotel. We should ignore this hotel completely and not accept their ideas," said another Chinese tourist Yang Jieya.
Major Chinese travel sites, including Ctrip and eLong, have started to boycott the Tokyo-based hotel chain. Searches for the APA hotels on these sites yielded no results, as of Thursday evening.
On Thursday, the organizer of the Olympic Council of Asia's 8th Asian Winter Games (AWG) in Sapporo told Xinhua that it has requested the APA hotel to remove the books in its rooms, but the hotel made no replies so far.
The 8th AWG will be held in Sapporo and Obihiro during Feb.19-26. To save cost, the 2017 Sapporo AWG has not built athletes village, but chose two local hotels as official designated reception hotel for athletes. APA Hotel&Resort Sapporo is one of the two hotels.
According to accommodation arrangement, athelets from Chinese and South Korean delegation will be accommodated in the hotel, Toshima Kouji, a staff working in the media section of the organizing committee of the 2017 Sapporo AWG, told Xinhua in a telephone interview.
The organizing committee has requested APA to "remove the rightist-wing books placed in the hotel guest rooms." however, "APA has made no replies yet," said Toshima Kouji.
The organizing committee has not yet decided what to do next if APA refuses to remove the books. But there is no plans to replace the designated reception hotel, he said, adding that the organizing committee temporarily does not consider communicating with the Chinese side over the issue.
Xinhua correspondent called the APA hotel in Sapporo, but the hotel staff answering the phone denied knowledge of the issue, and refused to reply in details.
The APA hotels belong to Japan APA Group Corporation, which was founded in 1971. So far, it has 413 branches and about 66,950 guest rooms all over the world. With convenient locations and low prices, the hotel chain is not only popular with locals, but also attracts a lot of tourists from all over the world, including China and South Korea.
The CEO of APA Group, Toshio Motoya is a long-time rightist. His titles include deputy director of a support group for Japanese Prime Minister Shinzo Abe and director general of the Sankei Shimbun newspaper's reader's club.
