As for why you want to be a soldier, the reasons are as follows:
His character is that kind of integrity and composure.
* Integrity is also seen in the novel. He likes to make friends with Rong Fei because he is "kind, optimistic, cheerful and lively, and sincere to people ..." Seeing that Rong Fei and Qiyan have contradictions, he confronted Qiyan privately and pointed out his problems. This makes it impossible for him not to care about things/people he knows outside himself.
* If you are calm, you can compare his and Li Jingyu's mentality of going to the canteen after being rescued. He has a strong ability to accept changes in things and has good potential as a soldier. And smart.
Secondly, this funeral has a profound impact on people. Huang Mo was frightened by Zhao He and ran directly to the tree. After experiencing a catastrophe, Wang Guangyuan will think about the future ... At last, the soldier who saved everyone appeared, and Wu Shengban cried, which impressed me deeply. This has a great influence on him.
So he went to the army.