【明報專訊】THIS year marks the 40th anniversary of both the beginning of the Reform and Opening Up policy and the publication of the Joint Communiqué on the Establishment of Diplomatic Relations. However, as can be seen from the ongoing trade war and the strongly worded speech made by US Vice President Mike Pence last week, the relationship between China and the US is facing its biggest challenge since the establishment of relations 40 years ago. There will be a new, monumental challenge facing the leaders of the national government in Beijing when China furthers the Reform and Opening Up policy against this backdrop.