A past event from 30 years ago, stripped from my dusty memory, is still so painful. Horrible scenes, the deaths of comrades, we use our blood and lives to explore the unknown world, which is mysterious and full of crises. I served in the 749 Bureau of the Commission of Science, Technology and Industry for National Defense. As time goes by, most of my experiences have been declassified. Today, I want to make them public, just to rest in peace for my comrades who are sleeping in a foreign land, and hope that people can know and remember them. That year, we were in our prime and at the same age.