What exactly does "four iron four" mean?

Four iron fingers: iron faith, iron faith, iron discipline and iron responsibility. There are four meanings: soul, ability, blood and morality. The four railways have iron-clad beliefs: stand firm in politics, stand firm in thought, and be highly consistent in action, always be loyal to the party without doping quality or water, and be a person who can truly reassure the party and the people.

Iron general belief: belief is the cornerstone, and belief is the driving force. Only with a solid foundation can we keep the spiritual highland; If you have sufficient motivation, you can move forward through the thorns.

Iron discipline: punishment begins with soldiers and follows the law. Looking back on the history of our army, from "three disciplines and eight attentions" to "five unifications and four natures"; From "grasping construction and the rule of law" to managing the army according to law and strictly,

"Iron discipline" has become the distinctive political character of the people's army. Iron is generally responsible: the journey is like iron, and the mission is like a mountain; The times are changing, and the righteousness lasts forever.

Four things: soul, ability, blood, morality.