A newspaper published by China's official news agency has said the new president of rival Taiwan is more "extreme" in her politics because she is unmarried and lacks the emotional balance provided by romantic and family life.

The comments were part of an editorial that denounced President Tsai Ing-wen as a strident advocate of self-governing Taiwan's formal independence from China, something Beijing says it will use military force to prevent.

The editorial said Ms Tsai's lack of a partner or children makes her politics more "emotional, personal and extreme", and that she is prone to focus excessively on details and short-term goals.

The editorial appeared on the website of the International Herald Leader, published by China's official Xinhua News Agency.

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