British Prime Minister Theresa May (L, center) and French President Emmanuel Macron (R, center) wave to the crowd in Albert, northern France on Nov. 9, 2018. French President Emmanuel Macron and visiting British Prime Minister Theresa May on Friday held a private meeting and a working lunch in the town of Albert, in the heart of the Somme region. May's visit is part of the commemoration of the First World War that has led Macron's week-long tour through battlefields in France. (Xinhua/Han Yan)