Transmigrating into a mountain, the system wants me to become an emperor for all time

Cheng Lin woke up one day to find himself transformed into the guardian spirit of Mount Yuxu, a desolate mountain, and bound to a Dynasty Builder System. Each day, a pile of discarded snacks, outdated machinery, and other trash from modern Earth fell from the sky. Amid the chaos of war and famine, refugees flocked to the mountain seeking food. Using expired instant noodles—still edible despite being past their expiration date—helmets, and fireworks, Cheng Lin managed to save the starving masses and helped Mu Ying establish the Kingdom of Peace. When local gentry, government officials, and the Empress' army came to attack, Cheng Lin relied on equipment crafted from repurposed everyday items from the modern world to effortlessly defeat them. He even used spicy snack sticks and ethereal projections to shatter the enemy's morale. Over time, Cheng Lin toppled the corrupt dynasty, launched a northern campaign against hostile northern tribes, and implemented community-run schools and clinics. With nothing but repurposed everyday items from the modern world, he miraculously built a prosperous era where everyone had enough to eat and neighboring nations paid tribute to his kingdom.