Start Cultivating Immortality After Picking up a Secret Book

Lin Xuan accidentally got a secret book of cultivating immortals and was transported to a world where demons and monsters were rampant. He practiced cultivating immortals and defeated all kinds of demons and monsters. (This book covers the division of realms of cultivation, Qi training, foundation building, golden elixir, Yuanying, transformation into gods, spiritual training, Taoism, overcoming tribulations, and Mahayana) (Dividing the realms of warriors in the small world, training skin, training blood, training bones, training body, training spirit)