Although Sino-US relations have been full of twists and turns in recent months due to the US provocation on Taiwan and other issues, high-level Sino-US interaction has not stagnated. Following the talks held by the Chinese and US defense ministers at the Shangri-La Dialogue in Singapore, Yang Jiechi, member of the Political Bureau of the CPC Central Committee and director of the Office of the Central Foreign Affairs Commission, met with US President National Security Adviser Sullivan in Luxembourg on the 14th, and the two sides talked for about four and a half hours.