Differences over twentieth-century history were not the only cause of Sino-Japanese tensions. At the beginning of the twenty-first century, new difficulties arose. Trade tensions over the import of shiitake mushrooms and tatami mats began to complicate economic relations. Violence against Japanese at the Asian Cup games in Beijing in 2004 shocked many in Japan. When demonstrators in cities around China protested the revision of Japanese textbooks in March 2005, Japanese businesses also were damaged, further souring public opinion about China. In the corridors of Asian summit meetings, Chinese and Japanese leaders exchanged chilly stares and refused to speak. In 2006, in the midst of this “deep freeze” in diplomatic relations, Prime Minister Koizumi, dressed in full formal wear, paid an official visit to the Yasukuni Shrine on August 15, the day of the Japanese commemoration of the end of the war. A few weeks later, he resigned after five years as Japan’s prime minister.
For a while, Koizumi was blamed for the downturn in Tokyo’s relations with Beijing, and his successors seemed to make progress in changing the tenor of the relationship. Other factors continued to plague diplomatic ties, however. Public attitudes toward China were hardening. China’s economy grew, and the economic interdependence that had anchored Japan’s relationship with China created unforeseen frictions. The new UN Convention on the Law of the Sea raised questions about maritime claims, and the East China Sea became more and more populated with survey ships and new, more modern, naval vessels. Even regarding the deeply sensitive issue of historical memory, the Koizumi era was not the first entanglement of China policy with Japanese domestic politics and popular sentiment, and it would not be the last. In Japan, this intimate contact with a changing China was unnerving to many and called into question the premises of Japan’s postwar identity.
