China and Japan are two of Asia’s most powerful nations and the region’s biggest trading partners. Yet centuries of intense rivalry mean their economic embrace can never be taken for granted.

By Yimou Lee and Ben Blanchard TAIPEI, Dec 4 (Reuters) - China is deploying a large number of naval and coast guard vessels across East Asian waters, at one point more than 100, in the largest maritime show of force to date,

No end in sight to spat between Japan and China over Taiwan, as neither Tokyo nor Beijing shows signs of backing down.

China denied Japan's claims, stating Japanese aircraft had repeatedly approached and disrupted their previously announced carrier-based flight training. This marks a significant military escalation between the two nations, occurring amidst heightened tensions following remarks by Japanese prime minister Sanae Takaichi regarding Taiwan.

TAIPEI/TOKYO, Dec 5 (Reuters) - Taiwan and Japan voiced concern on Friday over Chinese military activities in the region, after Reuters reported that Beijing had deployed a large number of vessels across East Asian waters this week in its largest maritime show of force to date.