President Donald Trump welcomed Xi Jinping to the White House on Thursday.

It was a state visit.

Trump said he and Xi had built a "truly great friendship."

He said this started when he was first elected in 2016.

He talked about their friendship before the formal talks began.

Xi spoke in a more serious way in public.

He said the two countries' interests are "deeply intertwined."

He said competition should stay "healthy" and fair.

He also warned about the "Thucydides trap."

This is the idea that a rising power and a strong power often end up in war.

Xi said the relationship should be about catching up.

It should not be a contest where one side wins and the other loses.

The two sides agreed on Wednesday to extend a one-year trade truce by two months.

It was going to end on Nov. 10.

Xi asked Trump to handle the Taiwan issue "prudently."

This was reported by Chinese state media.

China wants the U.S. to stop selling weapons to Taiwan forever.

China also wants the U.S. to loosen rules on selling advanced chips.

Trump has called arms sales to Taiwan a "very good negotiating chip."

Xi also said China will invite 100,000 young Americans to study there.

This will happen over the next five years.

He said China will send two pandas to the Atlanta zoo.

Both leaders said artificial intelligence was important to talk about.

Xi said AI must stay under human control.

Trump's welcome with a red carpet made some lawmakers unhappy.

This included Sen. Roger Wicker, R-Miss.