It is an unusually welcoming gesture from a US president.
When Trump visited Beijing in May, he had to settle for being received by China's vice president at the airport.
"I will discuss almost everything with him (Xi)," Trump said ahead of the meeting.
“Everything” in this case can refer to many different topics. The trade war is a central issue where no lasting agreement has been secured, and when it comes to the war in Iran, China wants to avoid US sanctions on countries that do business with Iran.
The threat of a military confrontation over Taiwan also hangs over the summit.
But of all the issues that have strained the relationship between the superpowers, AI looks set to be the one that will take centre stage during the summit.
The US and China are at the forefront of development and are competing to be the best and fastest.
