Type-moon, You Call This the Han Dynasty

Bai Mu transmigrated to ancient times, experiencing natural disasters and being driven to desperation. On the verge of starvation, an old man handed him a bowl of talismanic water, saying it would cure him. He decisively chose to cling to the old man's power. Then he followed the old man across the land. He witnessed the sparsely mentioned acts of cannibalism in history books, and the devastated wastelands described in simple terms. One day, the old man shouted the slogan, "The Blue Heaven is dead, the Yellow Heaven shall rise!" He knew he had to do something. Then he saw the enemy deploying towering Gundams, thousands of Tiger tanks, and airships floating in the sky. You call this the Great Han?! —————— Two thousand years later, Bai Mu was summoned in modern times. You didn't say I transmigrated to the Type-Moon Great Han!