Taiwan's opposition leader Cheng Li-wun is on a rare visit to China at the invitation of President Xi Jinping which as she says is for promoting cross-strait "peace."

"The purpose of this visit to mainland China is precisely to show the world that it is not just Taiwan that unilaterally hopes for peace," said Cheng, who is the chairperson of the largest opposition party, Kuomintang (KMT).

"I believe that through this journey for peace, everyone is even more eager to see the sincerity and determination of the CPC Central Committee to use peaceful dialogue and exchange to resolve all possible differences between the two sides," she added, referring to the initials of the Communist Party of China.

How China uses religion for political influence in Taiwan

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"To preserve peace is to preserve Taiwan," Cheng told a news conference at KMT headquarters in Taipei, when asked about her priorities for the…