China has advised its citizens to avoid travelling to Japan, following a diplomatic feud sparked by comments by Tokyo's new premier about a hypothetical attack on Taiwan.

Japanese Prime Minister Sanae Takaichi told parliament on November 7 that use of force against the self-ruled island claimed by China could warrant a military response from Tokyo.

On Friday, Beijing said that it had summoned Japan's ambassador, while Tokyo said it had summoned China's ambassador after an "inappropriate" and now-removed online post.

Tokyo has since said its position on Taiwan -- just 100 kilometres (62 miles) from the nearest Japanese island -- is unchanged.

In an online post late Friday, China's embassy in Japan warned its citizens against travelling to the country.

"Recently, Japanese leaders have m

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