National Mecha: I Am a Cultivator and Am Invincible!

After the disaster, humans discovered the ancient cultivation scriptures and at the same time discovered the secrets of the world. The world is reset once every 100,000 years. Because humans once had a cultivation civilization in ancient times and reached the origin of the world, humans survived the reset in the Third World War! Qin Leng obtained the Qimen Dunjia. In an era when mechas were everywhere, he chose to cultivate immortality...