A young man built the Nantianmen, originally to defend against alien civilization, but accidentally connected to the ancient civilization through the wormhole soul. It was an era when various princes were divided. The young man sought a way to survive in the cracks. There were many heroes here, some passed down through the ages, and some were reviled for generations. The young man wanted to rely on modern knowledge to change everything in front of him, but the ancients had already seen the future, and he became a bystander of history. This period of history is called the Later Three Kingdoms by later generations.
