STORY HIGHLIGHTS
Hong Kong (CNN) -- The fragile relationship between China and Japan came under fresh strain Tuesday as ships from both sides crowded into the waters around a disputed group of islands and nearly 170 Japanese lawmakers visited a controversial war memorial.
The Japanese Coast Guard said eight Chinese government ships had entered waters near the contested islands in the East China Sea on Tuesday morning, the largest number to do so at any one time since tensions surrounding the territorial dispute escalated last year. China said its ships were there to monitor the movements of Japanese vessels in the area after a Japanese nationalist group chartered a flotilla of fishing boats to take dozens of activists there.
The Japanese foreign ministry responded by summoning the Chinese ambassador in Tokyo to lodge a strong protest about the Chinese ships' presence near the uninhabited islands that lie between Okinawa and Taiwan and are known as Senkaku in Japanese and Diaoyu in Chinese. The Chinese ambassador, Cheng Yonghua, retorted that it was the Japanese vessels that were intruding in Chinese territory.
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A day earlier, Beijing had protested to Tokyo about a visit at the weekend by three Japanese cabinet ministers to the Yasukuni Shrine in Tokyo, which honors Japanese people killed while fighting for their country, including convicted war criminals.
Countries that suffered heavily at the hands of the Japanese military before and during World War II, such as China and South Korea, consider the shrine as an emblem of that aggressive period in Japanese history.
But China's representations failed to deter 168 Japanese members of parliament from visiting the shrine on Tuesday to pay their respects to the war dead, the most to do so in recent years.
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