In the early years of the Republic of China, the world was in chaos, with many concessions and warlords. Shui Le, a poor young man from northern Jiangsu Province, was born smart and had a photographic memory. He made his way through troubled times with his resourcefulness and courage. From an apprentice in a pawnshop in the French Concession to the "Little Grain King" who monopolized Shanghai's grain trade, from an upstart in the newspaper industry to the youngest banker, from an industrial tycoon to a returnee who bravely retreated - he has experienced many shocking rises and tragic falls in his life, and every time he fell into the abyss, he was able to break through and be reborn in a more dazzling way. His best friend Qixing, who always carries moral responsibility even when laughing and scolding, will never leave him; the beauty Shen Yueru, who is stunningly talented but hides a deadly murderous intention, has become the biggest turning point in his life. The whole story contains several shocking twists, several ups and downs of life and death, and many bursts of wisdom, writing a magnificent legend of the business war of the Republic of China. Only in the ups and downs can we see the human heart; beyond gains and losses, we can only understand life.