March 2, 1969, at 11:15 a.m., shots rang out on the Soviet-Chinese border, marking the beginning of the first armed conflict in history between the two largest socialist powers. During armed clashes on the borders of the Soviet Union and the People's Republic of China, several hundred people died, and relations between the two countries were damaged for decades to come. However, the most amazing thing happened after the end of the Soviet-Chinese confrontation. The political leaders of the warring states, realizing that they were on the brink of an abyss, tried not only to hush up the conflict, but to actually erase it from history. For generations born after 1969, practically nothing was known about the confrontation between the USSR and the PRC until the end of the 1990s. The book you are holding in your hands is unique. Its author, an officer of the Border Service of the FSB of Russia, for many years, piece by piece, reconstructed the chronicle of the conflict, trying to find answers to burning questions: what happened on the Soviet-Chinese border in 1969? What caused such a fierce confrontation? How did the two countries prevent the slide into full-scale conflict? After reading this book, the reader will find answers to these and many other questions.