Japan Protests China’s 20th Structure Near Median Line in Energy-Rich East China Sea; China Rejects Protest

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Published Jul 4, 2025, 07:23 AM

Japan has lodged a formal protest against China following the detection of new construction activities in the East China Sea near the median line that separates the two countries. The Japanese Foreign Ministry confirmed that China has begun installing a new structure on the western side of this equidistant line, an area that is disputed and known to be energy-rich. This installation marks approximately the 20th such structure built by China in the region. Satellite imagery has also revealed the presence of two large Chinese work vessels near the site.

The Japanese government has called on China to cease unilateral resource development activities in the area. In response, the Chinese Foreign Ministry rejected Japan's accusations, stating that the criticisms lack basis and that the construction activities fall within China's sovereign rights. This development is part of broader regional tensions, with similar Chinese assertiveness observed in the Yellow Sea, where installation of buoys, naval exercises, and no-sail zones have raised concerns among neighboring countries including South Korea.

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#Japan #China #East China Sea #Japanese Foreign Ministry #Chinese #Japanese government #Chinese Foreign Ministry #Yellow Sea #South Korea

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Sources

reuters.com(9)wsj.com(4)amti.csis.org(2)yna.co.kr

AMTI

@AsiaMTI

AMTI and @CSISKoreaChair use satellite imagery and AIS data to provide a comprehensive timeline on China's deployment of steel structures in the Yellow Sea and the resulting tensions with South Korea:

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@yonhaptweet

WSJ “West Sea, Northeast Asia's new explosives rise... Chinese provocation surges”

AMTI

@AsiaMTI

A searchable map of every feature in the South China Sea, with links to satellite imagery from our Island Tracker and filters to toggle by occupier and legal status—find it at AMTI:

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11 days ago•Latest version

Japan Protests China’s 20th Structure in East China Sea Amid Chinese Coast Guard Incursions Near Senkaku Islands

11 days ago•Original version

Japan Protests China’s 20th Structure Near Median Line in Energy-Rich East China Sea; China Rejects Protest

Japan Protests China’s 20th Structure Near Median Line in Energy-Rich East China Sea; China Rejects Protest

Financial Analysis

Associated Financial Markets

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