The article briefly describes the participation of Archimandrite Palladius (Kafarov) in the Tianjin negotiations of 1858, and describes a manuscript kept in the Russian State Archive of Ancient Acts (RGADA) containing an introduction to Palladius ' diary, which was not previously published. Keywords: Russian-Chinese relations, Treaty of Tianjin, Russian Ecclesiastical Mission in Beijing, Archimandrite Palladiy Kafarov, Evfimiy Vasilyevich Putyatin, Fyodor Romanovich Osten-Saken. ARCHIMANDRITE PALLADIUS' DIARY FOR 1858: A NOTE ON THE HISTORY OF ITS PUBLICATION The article tells the story of the publication of the diary of Archimandrite Palladius (Kafarov) in 1858 and briefly describes the manuscript from the fund of Baron Reinhold Friedrich (Fedor Romanovich) von der Osten-Sacken, located in the Russian State Archive of Ancient Acts (RGADA) and containing an early introduction to the unpublished diary of Palladius. The author offers the publication of archival material with comments. Keywords: treaty of Tientsin, Opium wars, Palladius Kafarov, Russian Orthodox Mission in Beijing, Sino-Russian relations, Yevfimy Putyatin, Reinhold Friedrich von der Osten-Sacken. Signed on June 1, 1858,1 in Tientsin, the Russo-Chinese Treaty of Tientsin is part of a series of unequal Tientsin Treaties signed by China with England, France, the United States, and Russia in the summer of 1858, during the Second Opium War (1856-1860) .2The British Empire was not entirely satisfied with the volume of sales of English goods in China, and therefore it was planned to open the entire Middle Kingdom to trade. However, realizing that other powers such as France, the United States, and Russia are unlikely to remain bystanders, the British Empire has repeatedly taken the initiative to take joint action in China. As a result, in December 1856, an agreement on such actions was reached with France. Immediately, preparations for military operations began: in early December 1856, the Vice Admiral KULIKO ... Read more