On this day, 140 years ago, on December 29, 1885 (November 24, 1885 in the lunar calendar), the British Foreign Minister notified the Qing government that it wanted to merge with Myanmar. On December 29, 1885, the British Foreign Minister ordered the British Ambassador to inform the Prime Minister Yamen of the Qing Dynasty that starting from January 1 next year, Britain would merge with Myanmar. Myanmar borders Yunnan, China. China and Myanmar have long economic and cultural exchanges. During the Qianlong period, King Meng Yun of Myanmar accepted the imperial edict of the Qing Dynasty. After occupying India, Britain tried its best to invade Myanmar. In 1824 and 1852, they launched two wars of aggression and occupied Lower Myanmar (southern Myanmar). After that, he attempted to find a path from Myanmar to China in order to invade China from the southwest. The Sino-British Treaty of Yantai in 1876 enabled Britain to achieve this goal. The aggressive interests achieved by France in the Sino-French War completely surfaced the contradiction between Britain and France for southwest China. The annexation of Myanmar became the most realistic way for Britain to compete with France. On August 29, 1885, the King of Myanmar fined the British Wood Merchant Company 2.3 million rupees for smuggling timber and canceled its mountain lease contract. The British and Indian governors used the Wood Merchant case to send troops to Myanmar and occupy the capital Mandalay. The British Foreign Minister first notified Zeng Jize, Minister of the Qing Dynasty to Britain, falsely claiming that the British troops had entered Myanmar and fully respected the rights of China. The purpose was to avenge the King of Myanmar's abuse of the British and punish them. Once the goal is achieved, we will prepare to negotiate with China on the future disposal of Myanmar. However, on November 29, after the British army captured King Sibo of Myanmar, on December 29, the British Foreign Minister ordered the British Ambassador to note a note to the General Administration of the Qing Dynasty, announcing that Upper Myanmar would be merged into British India, thus achieving full occupation of Myanmar. The Qing government, which had just signed the New Treaty between China and France, naturally dared not express its opposition. On July 24 of the following year, China and Britain also signed the "Myanmar Clause", and the Qing government was forced to admit the fact that Britain occupied Myanmar. Britain thus gained an opportunity of aggression comparable to France in southwest China.