On Monday, an exhibition of historical materials was showcased in the Memorial of the First National Congress of the Communist Party of China in Shanghai. The exhibition will showcase over 400 items, including more than 260 cultural relics and documents, according to the organizer. The manuscript of Marx's “On the Polish Question” from the collection of Sun Yat-sen University was unveiled, marking the first time the precious manuscript arrived at the birthplace of the Party. The exhibition will last until July. (Photos: Lu Ting/GT)