Beijing, Chinese President Xi Jinping met with Taiwan's opposition leader Cheng Li-wun in Beijing ahead of US President Donald Trump's visit to China next month.
Cheng is the first Kuomintang chairperson to lead her party's delegation on a week-long visit to the Chinese mainland in the past decade.
Her meeting with Xi is being closely watched around the world as the Chinese leader stepped up efforts to reunify Taiwan, strictly enforcing its One-China policy since he took over in 2012.
China claims Taiwan as part of it and pledges to reunite it with the mainland.
Speaking ahead of her departure to Beijing, Cheng called the visit a journey of peace and said both sides of the Taiwan Strait should seek dialogue and communication to resolve their differences.
Cheng's visit is regarded as significant as it comes ahead of US President Donald Trump's trip to Beijing on May 14-15, during which Taiwan is expected to figure prominently in his talks with Xi.
The deal includes HIMARS rocket systems, anti-tank missiles, anti-armour missiles, loitering suicide drones, howitzers, military software and parts for other equipment.
China said it firmly opposes and strongly condemns the US arms sales package.
