In the second episode, four people from the Institute of Atomic Energy sat together to play bridge. Lao Lu suddenly asked the new researcher Obara: After spending so much time calculating and figuring out how the hydrogen bomb explodes every day, what if it really happened? What's the point of research if you succeed and hope it never explodes. In fact, after learning about the dangers of nuclear weapons, I was briefly confused by this issue, but the truth is indeed as what this young man said, "If there were no hydrogen bombs, other countries would be unscrupulous, and other countries' nuclear weapons would be available anytime and anywhere." Throwing it onto our land is called nuclear balance. We manufacture nuclear weapons so that other countries’ nuclear weapons will not explode.” As soon as Obara finished speaking, the three seniors from the scientific research institute looked at each other and expressed their acquiescence. The director's words made sense, "Peace cannot come, and only those who have strength will not be beaten."

The plot of four people playing bridge, on the surface, is for recreation and relaxation. In fact, it explains the international background of China at that time and the responsibilities and missions of scientific researchers represented by Yu Min. It also profoundly expresses China's stance on manufacturing nuclear weapons at that time. At that time, New China was short of supplies, but it still strongly supported the research of atomic bombs and hydrogen bombs. This was inseparable from the international situation. Due to their huge power, nuclear weapons are often used as a deterrent and strong backing in peacetime, achieving the purpose of "conquering the enemy without fighting."

In the tense international situation at that time, for countries such as China that promised not to use nuclear weapons first, we must have nuclear weapons as a "second strike force." With nuclear weapons, other countries dare to Easily use nuclear weapons as a force and means of self-defense. There was a theory at that time that if you want to stop a nuclear war, there are only two ways: first, to completely destroy nuclear weapons, when this cannot be achieved; second, everyone has nuclear weapons, because only possessing nuclear weapons can most effectively prevent other countries from using nuclear weapons. . Therefore, after the founding of the People's Republic of China, the country attached great importance to nuclear weapons because it knew that without nuclear weapons, it would not have a strong national defense force and would be subject to nuclear blackmail by other countries at any time. Fortunately, after going through many difficulties, our country finally independently completed the research and development of the hydrogen bomb. It is precisely because many scientific researchers with great intentions like Yu Min devoted themselves to the research of two bombs that our country has completed independent research and development from zero to one.

"We don't bully others, and we won't let others bully us." "What should I be afraid of when I have cards in my hand?" Yu Min said in the play. This speaks of China’s position, responsibility and pattern! Even so far, no nuclear-armed country in the world has made a similar clear commitment. It is not difficult to see that China is a responsible and peace-loving world power.