Help him become an immortal

Thousands of worlds, thousands of strands all kinds of silk threads are condensed into the word "strange" every plant, mountain and water shows the normality of the world. Only when you go up to the sky for seven days and nine nights, can you feel the sad cold and cicadas cry without tears family life is in decline, and one person leaves his hometown until the south (it's a little white text. It's good for everyone to read. I'll modify it in time if it's bad)