In "Soldier Assault", Shi Jin has been playing the role of many guides and guiding lights. Xu Sanduo's growth and transformation, half of the military merit medal will be distributed to the squad leader.
The squad leader sheltered Sanduo from the wind and rain, and Sanduo did his best for the squad leader. Such a benign interaction and two-way rush is really touching. It is a pity that people have joys and sorrows, and the moon is cloudy and sunny. All the feasts will come to an end. With Shi Jin's retirement, Xu Sanduo still ushered in the moment of parting. This is the most tear-jerking moment in the play. Squad Leader Shi left, as if he had taken away a lot of souls. After Shi Jin left, Xu Sanduo seemed to have encountered a water reversal, the good news did not come, and the bad news continued - Chengcai went to the fifth class of the grassland, and the Seventh Steel Company suffered a withdrawal, and even Gaocheng, which had always been strong, couldn't hold it and collapsed. 
The ensuing blows made Xu Sanduo unacceptable. With his weak chicken attributes and ability to resist pressure, sooner or later he will be overwhelmed and give up treatment directly. Therefore, in order to avoid Xu Sanduo's psychological breakdown and lying down, Wu Liuyi thoughtfully sent Xu Sanduo's address to Shi Jin. Wu Liuyi's intention is very clear, if Xu Sanduo wants to know Shi Jin, he can write a letter to the squad leader. The strange thing is that from beginning to end, from beginning to end, Xu Sanduo never wrote a letter to the squad leader. Why didn't Xu Sanduo write a letter to Shi Jin? The answer is very simple, on the postcard from Wu Liuyi to Xu Sanduo, there is not only Shi Jin's address and zip code, but also such a sentence: ".Sanduo, I couldn't stand it anymore, so I wrote a letter to the squad leader. "Although Wu Liuyi encouraged Xu Sanduo to write a letter to the squad leader, he set preconditions."I can't stand it”。It was these four short words that made Xu Sanduo write one letter after another, but he never sent it. 
In the world of Xu Sanduo, Shi Jin is not only the squad leader, but also a nobleman, a life mentor, and a spiritual pillar. On the night of the withdrawal of the Seventh Steel Company, Xu Sanduo, who was in pain and depression, wanted to write a letter to the squad leader to complain. At that time, Xu Sanduo, under the lamp, picked up a pen, spread out the paper, and prepared to write a letter to the squad leader, but after thinking about it for a long time, he finally chose to give up. Although Wu Liuyi's words are warm, they have the necessary prerequisites. In this regard, Xu Sanduo thought so in his heart,"Said that I couldn't stand it and write a letter to the squad leader, but the letter was never finished, that day I understood one thing, can stand up or not is a choice question, I don't have the right to choose not to stand up, this answer has been set on the first day of enlistment. 
Wu Liuyi's postcard, like the 22nd Catch-22, is an unsolvable loop. He seemed to provide Xu Sanduo with the address of the squad leader, but in fact blocked the possibility of writing a letter. If you can't stand it, write a letter to the squad leader, in other words, writing a letter to the squad leader means that you can't stand it. Xu Sanduo suddenly had an epiphany at this moment, between being able to stand up and not being able to stand it, he had no right to choose, he could only resist the pressure and be hard-headed. Xu Sanduo didn't want to be ridiculed by his comrades-in-arms and didn't want to admit defeat to reality, so he could only play with his life and carry it to the end. I couldn't stand it anymore and wrote a letter to the squad leader- Wu Liuyi's short nine words directly cut off Xu Sanduo's retreat. 
If you write, you confess. This simple and clear logic forced Xu Sanduo to face, to grow, to play alone, and to carry it by himself. Just like a wounded lion, he always licks his wounds alone and heals them silently. In fact, in this paradox, which resembles an infinite nesting doll, there is also Wu Liuyi's good intentions. Xu Sanduo is psychologically fragile, has poor ability to resist pressure, is at a loss when encountering difficulties, and hesitates when he needs to choose. Shi Banchang had just left on the front foot, and the Seventh Steel Company had withdrawn on the back foot, for such sad and sad news, Wu Liuyi was naturally reluctant to let Shi Jin know. However, Wu Liuyi himself can keep his mouth shut, which does not mean that Xu Sanduo will also keep secrets. 
With a lot of Shuangshang, sooner or later, he will tell Shi Jin the news of the withdrawal of the Seventh Steel Company and the separation of his comrades-in-arms, which is tantamount to sprinkling salt on Shi Jin's wounds. Wu Liuyi predicted Xu Sanduo's prediction, so he wrote the words "I can't stand it, write a letter to the squad leader". If you can withstand it, you won't write a letter to the squad leader, and if you don't write a letter, you won't leak the news of the revocation of the Seventh Steel Company. As a result, Xu Sanduo's mouth was unconsciously sealed. Before transformation and sublimation, Xu Sanduo and Shi Jin, not disturbing each other and being well, is the best way to get along.