In addition, Japan last weekend decided to retain the US military base on the Okinawa. Japan is also concerned about the Chinese navy's recent activity on the East China Sea.

此外，日方上周末决定保留在冲绳县的美军基地，中国海军此前在东海海域活动也受到日方关注。

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A Chinese submarine was spotted near Okinawa in 2004, and last year China briefly deployed warships near its controversial gas-drilling RIGS in the East China Sea.

然而2004年，在冲绳岛附近发现一艘中国潜水艇。2005年，中国将其军舰简要部署在中国东海几个备受争议的气钻架附近。

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The Chinese military say that two of their East China Sea fleet fighter jets were scrambled to track an unnamed foreign surveillance aircraft on Sunday, according to China News Service.

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Whether the Chinese navy projects greater influence in the East China Sea and Sea of Japan because it bullied its way in or because a desperate Japan invited them in is ultimately immaterial if the end result is that Chinese ships can sail more freely and in greater numbers.

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Japan and China are currently involved in a territorial dispute over ownership of an East China Sea island chain, with the row sparking a Chinese boycott of some Japanese goods.

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