Why did Xi and China’s first lady bring their own flasks to White House banquet?

Amid the polished silverware and fine crystal stemware on display at the state dinner in the White House on Thursday sat the vacuum flasks brought by Chinese President Xi Jinping and first lady Peng Liyuan. The couple’s flasks, black for Xi and white for Peng, were spotted on their table during the formal dinner, signalling a subtle self-assurance as cultural authenticity met high diplomacy. Extending this everyday practice to the White House banquet was in tune with the host nation’s own...