Immortality Begins with the Ten Thousand Souls Banner

If you don't work hard at cultivating immortals, you will still be brothers in the Ten Thousand Soul Banners! However, Lu Ling traveled to another world, and as soon as he opened his eyes, he was taken into the tens of billions of soul flags of the Nine Nether Demon Lord, and the hell started. Fortunately, it is bound to the Ten Thousand Souls Evolution System and can be upgraded by swallowing resentful souls. Then wouldn't the countless resentful souls in these tens of billions of soul flags be equivalent to Lu Ling's buffet feast? Until that day, he was discovered by the Demon Lord...