Fantasy: Cultivation into Immortality? Which Kind of Immortal Should You Cultivate?

Reincarnation is eternal life. The vast world of cultivating immortals suddenly had a salesman riding a tricycle, wandering around the world aimlessly. No one knows where he came from, and no one knows where he is going. The world only knows that his surname is Xu, because there is a flag erected on the tricycle with four big characters written crookedly on it, "Xu's groceries". If anyone is lucky enough to meet you, then you are lucky. Although the pie falling from the sky is small, it still falls on your head today.