4. The China-US relationship is crucial not just to the two countries themselves, but also to regional and global peace, security, and stability. Hence we must work together to continuously take it forward.
5. The letter mysteriously arrived at the California University of Pennsylvania, in the north-eastern state of Pennsylvania, 10 days ago. Written to Mr Moore, the two-page letter was postmarked 20 February 1958 and signed "love forever Vonnie".