I Am an Immortal

On his way to deliver takeout, Xu Xuan was struck by an unexpected disaster.

When he woke up, he discovered that he had successfully transmigrated to another world. He had arrived as an immortal, with a lifespan equal to the heavens and eternal youth, and had even awakened a World System.

But when he opened the System, he saw that the biggest word on the screen was: "Run!"