During the Asia-Pacific Economic Cooperation (APEC) summit in Lima, Peru, Chinese President Xi Jinping warned US President Joe Biden about four critical 'red lines' that the United States must not cross, with a particular emphasis on Taiwan.

Xi emphasized issues related to Taiwan, democracy and human rights, frameworks and systems, and development interests as non-negotiable boundaries for China-US relations.

Despite China's claim to Taiwan as its territory and its refusal to rule out force, the US remains Taiwan's main security backer.

Xi cautioned the US against supporting Taiwan's separatist movements, claiming such actions threaten peace in the Taiwan Strait.

Beyond Taiwan, Xi urged the US to refrain from intervening in disputes in the South China Sea, where China has intensified its territorial claims.

Additionally, he touched upon the Korean peninsula and the Ukraine war, emphasizing China's desire to prevent escalation.

Xi declared China's approach as 'open and aboveboard.'

In light of the upcoming transition to Donald Trump's presidency, Xi expressed China's readiness to work with the new US administration to maintain stable relations, urging for cooperation while acknowledging past trade tensions under Trump.

Xi highlighted the importance of a smooth transition and stable bilateral ties, warning against treating each other as adversaries.

Despite challenges, Xi stressed the significance of a healthy China-US relationship for global stability.

The summit also announced that China will host the next APEC summit in 2026, aiming for strong economic cooperation in the Asia-Pacific region.

Xi warned of the negative impact of protectionism, underscoring the need for open trade policies.