Today, 40 years ago, on July 11, 1985 (Lunar Calendar, May 24, 1985), Li made a state visit to the United States and Canada. On July 11, 1985, President Li made a state visit to Canada and the United States. This was the first visit by the President of the People's Republic of China to two North American countries on the other side of the Pacific. On July 16, the Chinese and Chinese governments signed the extension of the Trade Agreement and the establishment of the Agricultural Joint Commission for the exchange of documents in Ottawa. On July 23, China and the United States signed the two-year implementation plan of the Nuclear Cooperation Agreement, the China-American Cultural Agreement, the China-American Educational Cooperation Exchange Protocol and the Sino-American Fisheries Agreement in Washington.