One day, space passages suddenly appeared all over the world, and many animals that no one had ever seen ran out of the space passages. These animals began to attack humans as soon as they appeared. Until a young man from Gan Province recognized that these were monsters recorded in the "Book of Mountains and Seas". And they found a way to tell the government. Only then did everyone know the origin of these monsters. At this time, China took the lead in organizing a counterattack, and at the same time, countries around the world began to organize counterattack measures. Compared with the chaotic state of Western countries, China organized troops to fight back resolutely. Soon, China's counterattack achieved good results. At this time, the young man came up with a theory that the corpses of these monsters were edible and had many benefits. Later, Huaxia began to attack the opposite side of the space passage, only to discover that the opposite side was the world written in the "Book of Mountains and Seas" - the world of mountains and seas. Immediately afterwards, Huaxia organized all the people to practice while continuing to march into the mountain and sea world, fighting all the monsters in the mountain and sea world. Gradually, Huaxia discovered the secrets of the mountain and sea world, including the relics, secrets, and people of the ancestors of the Chinese nation. Then the discovered cultivation methods were gradually handed over to all the Chinese people. Later, the human race's ancestral temple was discovered, with the statues of Nuwa and the Three Pure Ones, as well as the statues of the Three Sovereigns and Five Emperors, as well as the highest cultivation method of the human race. And I also know the secret of mountains. It turns out that the world of mountains and seas is the link between the prehistoric world of Esperanto where we are. Through the world of mountains and seas, we can reach the prehistoric world.