The Palace Has Been Under Construction for Hundreds of Years, and I Am the Immortal Emperor on Earth.

Ten years after the founding of the Li Dynasty, Gu Nanchu traveled through time and became the crown prince of the Dali Dynasty. As soon as he was born, Gu Nanchu was betrayed by a traitor and almost sent out of the palace. Fortunately, a eunuch with a palm print came to rescue him. Since then, Gu Nanchu has awakened to the immortality cultivation system. As long as he survives the disaster, he will be rewarded with immortality. He was almost exchanged for the prince by a civet cat and obtained an innate sword body. After being assassinated by an assassin, he was rescued by the eunuch who held the palm seal, and obtained the immortality cultivation technique "Eternal Green Technique". The plague ravaged Kyoto, but he survived safely and obtained the immortal martial arts "Sword Fingers of Nirvana". … In this world, demons are rampant and martial arts are supreme, but no one has embarked on the path to immortality. In the year 286 of Taichu, the ancient tribes of the Upper Realm and the Endless Demon Realm gathered an army of hundreds of millions and invaded the Li Dynasty, putting the country in great danger. Deep in the palace, Gu Nanchu, who had been cultivating for hundreds of years, suddenly opened his eyes. On that day, the sword came out of Kyoto, slaying demons, slaying the sky, and slaying the Tao. On that day, the world bowed its head, and the Martial Lord and the Demon King all bowed. That day, humanity flourished again, and a human immortal emperor appeared in the world.