A Primal World, but with Stardew Valley

(Farming + Infrastructure Building + No Female Lead + Civilization Building + Unification) Song Ci, a modern geologist, wakes up one day to find that he has transmigrated to a primitive world where people live like beasts. The environment is harsh, predators lurk everywhere, the tribes go hungry, and civilization is still in its infancy. He thinks he's doomed, only to discover that he's bound to a pixel-art Stardew Valley System! However, this System is a “cut-down version”: weapons are locked, mines are locked, and even fishing won't unlock until the primitive tribe reaches a certain level of prosperity. Song Ci has no choice but to pose as the “mouthpiece of the gods.” Using the faith points he starts with, he grows golden-star crops in the ice and snow, then wins the starving tribe's complete devotion with food. From simply filling empty stomachs to leading his people in intensive farming and building a fortified town, Song Ci combines the System with agriculture. Even the elderly, women, and children can work in safety, allowing the tribe to grow rapidly and prosper. But the real challenge is only beginning. Faced with the powerful Xuanyuan clan, which has already developed an early civilization and a system of trade, can he lead his “Stardew Valley Tribe” to rise above the tribal struggle and ultimately unite the primitive world, ushering in a golden age of civilization of his own?