This document, declassified in January 2015, contains a 1989 diplomatic memorandum from the Canadian Embassy in Beijing. It describes the circumstances surrounding the June 4 massacre as they were known to officials at the Canadian embassy.
The documents, declassified by the National Library and Archives of Canada, show the Canadian government's concern about the invasion of the embassy by Chinese troops. The documents also describe the crackdown in Beijing and how the troops killed citizens.
The author of this book, Yang Jisheng, is a veteran journalist with 35 years of experience in journalism at Xinhua News Agency, China's official news organization. He knows a great deal about the ups and downs of Chinese politics after the end of the Cultural Revolution as well as the intricate power struggles at the top and has a lot of first-hand information. He personally interviewed Zhao Ziyang, Zhu Houze, Li Rui, Ren Zhongyi, An Zhiwen, Tian Jiyun, and other important people. “Political Struggles in China's Reform Era”, first published in Hong Kong in November 2004, was the subject of a series of crackdowns by the authorities against Yang Jisheng. It was republished in 2010 by Hong Kong's Cosmo Books.