1. Explosive equipment and technology tree: The refreshing feeling of instant material replenishment and critical fire support brought by system exchange; from "heartless cannon" to "Taihang-style" machine gun, infantry cannon and then to "bolide" rocket launcher, the military industry has a sense of accomplishment and epicness as it climbs step by step.
2. Defeat the strong with the weak: Under the absolute disadvantage of equipment and numbers, rely on wisdom, courage, system key point assistance and continuously improving military industry to defeat powerful enemies again and again.
3. Iron-blooded pride: Describe the courage, sacrifice, comradeship, and the love between soldiers and civilians during the war. Show the spirit of "bright sword".
4. Self-reliance: Emphasize the exchange of technology rather than unlimited reliance on finished products, and overcome all difficulties to establish an independent military industry system with a spirit of hard work and a sense of accomplishment.
5. Game of wits: The battle of wits and courage with Japanese commanders and spies of the Special High School; the alliance and game with friendly forces (Chu Yunfei); internal management and development strategies.
6. Historical picture: Under the classic framework and atmosphere of "Bright Sword", more military industry development, base area construction, economic and people's livelihood details are integrated to present a more three-dimensional picture of the Anti-Japanese War behind enemy lines.
7. Feelings of family and country: The lofty ideal of protecting the homeland, expelling the Japanese aggressors, and building a new China runs through the whole process.
