China's tourism administration has urged tour operators to sever ties with the APA hotel chain after an escalating row over the hotelier's denial of the 1937 Nanking Massacre.
A furor erupted this month over books by Toshio Motoya, president of Tokyo-based hotel and real estate developer, that air his revisionist views and are placed in every room of the firm's more than 400 hotels.
Motoya, using the pen name Seiji Fuji, wrote that stories of the Nanking Massacre were "impossible."