Under what conditions did Yu Min conduct scientific research? Write in your own words.

Yu Min conducts scientific research under the following conditions:

1. Yu Min studied hydrogen bombs without any reference. He independently completed the research and designed and manufactured the hydrogen bomb from the first principle. However, this is a follow-up study, not an original study.

2, the conditions are difficult and unknown. At that time, China's research on hydrogen bombs was still blank and there was no information. It is in such a difficult environment that Yu Min led the researchers to start the theoretical study of hydrogen bombs. He believed in science and experiment, and didn't even believe the experimental data of the famous American journals at that time.

3, give up the small family, for everyone. Yu Min devoted himself to the study of hydrogen bombs, rarely at home, and his family relied on his wife Yu Qin to support him. The research on the hydrogen bomb is absolutely confidential, and even his wife doesn't know what Yu Min is doing. When his wife Yu Qin gave birth to a child, she carried things and endured the pain, and moved to the hospital step by step.