The Queen greeted President Xi Jinping at a ceremonial welcome on Horse Guards Parade in London.
Chinese President Xi Jinping and his wife have arrived in the UK for a four-day state visit.
They were greeted by The Queen and other members of the Royal family this morning and later they'll attend a big banquet at Buckingham Palace.
Check out these pictures of their trip so far.
Mr Xi was welcomed by guard of honour from the 1st Battalion Grenadier Guards. He was accompanied by the Queen's husband, the Duke of Edinburgh.
The Queen and Mr Xi ride along the Mall towards Buckingham Palace in the Queen's diamond jubilee state coach.
The President's visit to the UK is welcomed by many Chinese people who gathered on the Mall to cheer him.
Not everyone is pleased to see the President - protesters are angry because China does not always treat its people very well.
After the President got to Buckingham Palace, he was treated to this lunch of a lettuce leaf and a boiled egg.
In Buckingham Palace the Queen and Duke of Edinburgh showed the President and his wife some Chinese artwork in the Royal Collection.