BEIJING - A mainland spokesperson on Wednesday condemned the recent US-Japan joint declaration for its irresponsible remarks on Taiwan, calling it a blatant interference in China's internal affairs.

Zhu Fenglian, spokesperson for the State Council Taiwan Affairs Office, made the comments in response to a media query concerning the joint declaration reached between leaders of the United States and Japan after their recent meeting.

Zhu urged the United States to abide by the one-China principle and three China-US joint communiques and stop sending any wrong signal to "Taiwan independence" separatist elements.

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Noting that Japan is a country with historical responsibility regarding the Taiwan question, Zhu said Japan should learn from history, exercise caution in its words and actions, adhere to the four China-Japan political documents, and handle Taiwan-related issues prudently.

She also warned the Democratic Progressive Party authorities in Taiwan that any attempt to rely on external forces to divide the country is doomed to fail.