Xi's state visit to US

Chinese President Xi Jinping is in the United States on a state visit, his first in 11 years. In a written statement, President Xi extended sincere greetings and best wishes to the US people on behalf of the Chinese people. He said that the two peoples have maintained friendly exchanges for a long time, and their interests are deeply intertwined. The Chinese President recently responded to letters coming from American university students who had visited China, expressing hope that young people from both countries would foster mutual understanding and affinity. So what can these exchanges really change?