In China's eyes all three Taiwan presidential candidates are separatists, the frontrunner to be the island's next leader said on Wednesday in a fractious joint televised address with the other contenders.

Democratic Progressive Party’s (DPP) press conference in Taipei

The Jan. 13 presidential and parliamentary elections will define Chinese-claimed Taiwan's ties with Beijing, and are happening as China steps up military activities around the island to assert its sovereignty claims.

China has rebuked current Vice President Lai Ching-te, the ruling Democratic Progressive Party's (DPP) presidential candidate and leading in the polls, as a dangerous separatist, and portrayed the vote as a choice between war and peace.

In a live televised pre-election policy address by the three presidential candidates - an actual debate comes later this month - Lai said China's desire to "swallow up" Taiwan was the country's national policy.

"Don't foolishly allow China to define Taiwan independence," he said, standing next to the other two candidates, Hou Yu-ih from Taiwan's largest opposition party the Kuomintang, and former Taipei mayor Ko Wen-je of the much smaller Taiwan People's Party.

"Mayor Hou and Chairman Ko, in the eyes of China, the three of us standing here running for president are all for Taiwan independence," Lai added.

Taiwan and China's governments do not recognise each other and China says Taiwan has to accept they both belong to "one China" for talks to take place, which the DPP-led administration has refused to do, though it has offered talks many times.

Hou, who has been catching up to Lai in the polls, repeated his party's accusations that Lai wants the island's formal independence by ditching its formal name of the Republic of China, pointing to previous comments Lai has made about supporting independence.

"Taiwan independence will lead to war, and war is getting closer and closer to us," said Hou, whose party traditionally favours close ties with China but denies being pro-Beijing.

"I oppose one country, two systems, and I oppose Taiwan independence," he added, referring to the Hong Kong model of self-governance China has offered to Taiwan, though this enjoys next to no political support on the island.

China passed a law in 2005 giving it the legal basis for military action against Taiwan if it formally secedes or seems about to, and has placed sanctions on senior Taiwan officials, including the foreign minister, it says are separatists.

Taiwan's government says the Republic of China and People's Republic of China are "not subordinate" to each other, and that as the Republic of China it is already an independent country. Beijing says this is mere wordplay.

Ko, who has trailed in the polls after talks to form a joint ticket with the KMT collapsed in acrimony last month, made only brief mention of China, concentrating instead on issues like the high cost of housing that has won him support with young voters.

"I hope Taiwan can be a bridge between China and the United States, not a pawn in the confrontation between China and the United States," he said.

Xi straight-up told Biden that China is going to take over Taiwan, report says. It could end in war.

• Chinese leader Xi Jinping told President Joe Biden China intended to rule Taiwan, NBC News reported.

• The conversation took place on the fringes of the Apec summit in November.

• Tensions are increasing between China and Taiwan ahead of the election.

Chinese leader Xi Jinping told President Joe Biden that China intended to take control of Taiwan in a face-to-face meeting last month, NBC News reported.

The report, citing three former and current US officials, said that the remarks were made during a meeting on the fringes of the Apec summit in San Francisco in November.

While official readouts of the meeting emphasized the common ground the leaders found on issues such as the climate crisis, the report indicated that long-standing tensions over the de facto autonomy of Taiwan also surfaced.

Xi bluntly asserted the Chinese right to rule Taiwan and said it would prefer to take it peacefully not by force, according to NBC.

The Chinese leader reportedly denied US intelligence claims that China intended to be ready to seize Taiwan by 2027, saying the timing had not been decided.

The report echoes details of the meeting reported by Japanese outlet Nikkei, which characterized Xi's remarks on Taiwan as an attempt to dial down tensions, emphasizing that China wasn't planning military action, but laying out the conditions under which it would attack.

The Chinese president is under pressure amid economic turmoil in China, and at the meeting sought to smooth ties with the US and American business leaders in a bid to secure investment.

China has long asserted its right to rule Taiwan, which claimed its independence from China's communist government after the civil war in the 1940s.

In recent speeches, Xi has menaced Taiwan with the prospect of invasion, and US officials are increasingly concerned that Xi is planning on seizing control of Taiwan by force.

Biden has said that the US would come to the defense of Taiwan if it's attacked, though the remarks were modified by the White House.

The US has long maintained a position of "strategic ambiguity" on Taiwan, acknowledging Chinese claims to rule the territory yet hinting that it could defend Taiwan's right to self-governance if it's attacked.

Tensions have been increasing between Taiwan and the mainland in the run-up to Taiwan's elections next month.