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This book uses time as a context to systematically analyze the process of Tsarist Russia's aggression and expansion from the Principality of Muscovy in Eastern Europe to an empire across the Eurasian continent. It deeply reveals the nature of its expansion centered on military conquest, political intrigue, and treaty plunder. The 19th century was the pinnacle of Tsarist Russia's expansion. This book focuses on exposing its aggression against China: through unequal treaties such as the Treaty of Aihun, the Treaty of Beijing, and the Treaty on the Demarcation of the Northwest Boundary, it seized more than 1.5 Million square kilometers of territory in the northeast and northwest of China, and created the massacres of Hailanpao and Jiangdong No. 64 Tun. The book is supported by historical data, restores the bloody background of Tsarist Russia's expansion, analyzes its strategies of "using barbarians to control barbarians" and "barbaric conquest under the cloak of civilization", reveals the national conflicts and governance crises behind the huge territory, and provides a key reference for understanding the evolution of the modern Eurasian geopolitical pattern and the historical legacy of Tsarist Russia.