Interpreting China-US ties after Trump's visit

US President Donald Trump has wrapped up his China visit, with the two heads of state agreeing to build a constructive China-US relationship of strategic stability. Chinese Foreign Minister Wang Yi calls the meeting historic, noting it charts the course for bilateral ties. A former Chinese ambassador to the United States shares insights on issues such as the landmark meeting between the two presidents, the new vision of bilateral ties, and the importance of the one-China principle.