In the torrent of fate, a seemingly stubborn piece of "iron ore" was thrown into the huge furnace of the military camp. Chen Shitou, a frail young man who was hated by his father and ridiculed by his peers, stumbled into the square of steel lions with a vague yearning for the glory of his father's generation and a weak desire to change himself. This is a stage for the strong, a purgatory where blood and sweat intertwine, and a holy place where will and faith are tempered. From the "oil bottle" that staggered even when he turned around at the beginning, to the "steel blade" that gradually reveals its toughness and edge through repeated beatings, calcinations, and temperings, Chen Shitou will experience humiliation and glory, encountering a stern guide, a genius who seems to be loose but loyal, and countless fellow travelers who are forging ahead. This is the ultimate tempering path about growth, persistence, and "never abandon, never give up." See how a stubborn stone can be tempered into steel, and eventually become the sharpest steel blade to protect our country!