March 4, 1862, the fourth day of February (Saigon), China and Russia signed the land Tongshang Charter. Reference March 1862, the Constitution of the Sino-Russian land Tsusho signed in Beijing. By the Articles of Association of the International Trade and Russia to the Chinese border Barry tax exemption; small to make a living, "the Russian companies in Mongolia over the duty-free free trade; Russian suppliers of goods transported by land to Tianjin, imports are duty" in accordance with national tariff third of minus one "; transported to Tianjin, the Tongzhou Russian commercial goods, may stay two tenths after Zhangjiakou sale locally, on the one hand Free satisfied sub-tax, on the other hand imports are duty the same one-third less; Russia to from Zhangjiakou to trafficking Tuhuo returning only satisfied the child tax (2.5%), and exports are tax exempt. These provisions not only gives Russia a series of commercial privileges, and began road Tongshang tax cuts bad precedent countries invaders later follow suit, resulting in serious losses on the Chinese tax. (History TodayOnHistory.com)