As a military TV series, Descendants of the Sun does not have condescending preaching and superficial slogans, but describes the spirit and belief of Korean soldiers who are loyal to the country and the people and are not afraid to sacrifice their duties as soldiers with cordial characters and vivid details. In the play, once YOO SI JIN received orders from his superiors, he did not hesitate to devote himself to the task no matter where he was; The life of special forces is hard and boring, full of danger, and even life is often in danger. Every time he performs a task, he will write a suicide note. If he died on a special mission, he can't reveal the real cause of death. However, YOO SI JIN has never changed his mind about this profession from beginning to end. He is full of love and pride. When Mu-Yeon Kang tried to understand YOO SI JIN's motivation to contribute to defending the country, YOO SI JIN replied: "There is a belief in protecting children, the elderly and beautiful women; When high school students see roadside smoking, they will summon up courage to preach even if they are afraid; Even if the gun is pointed at the temple, I know the common sense of sticking to right and wrong, so as to keep the reputation of the soldiers-these are what I think of patriotism. " The creator expresses the seemingly lofty and illusory patriotism in plain words, and integrates the belief that the generals put their lives and deaths at risk for the motherland and the people into the concrete and real story, so that the audience can deeply understand the psychology of the characters and have a high sense of identity search for the values expressed in the play.

In Descendants of the Sun, the screenwriter improved this relationship more thoroughly, and no longer relied on the shell of "patient and cure". The roles played by Song Joong Ki and Song Huijing are both physically and mentally healthy adults. You are handsome and beautiful, you tease me and I tease you ... Love comes quickly, directly and strongly, and most importantly, on the basis of equality. Both sides are rational, mature and successful adults. There is no strange and vulgar bridge in their love, such as the mystery of life experience, love triangle, parents' opposition and family intrigue. Two adults look at each other and then start to fall in love. This is the simplest Marisol love!