Can you recommend some fantasy novels with many titles that were completed before 2008?

In the content, people migrated from the earth to live underground in the year XXX. There was a kind of demonic disintegration method. After the male and female protagonists died, they were reincarnated together. The female protagonist seemed to be called Lin Yuyan. He had forgotten a lot of the content and only remembered a little. The male lead was practicing martial arts with his senior sister on the mountain. Both of them liked each other very much. Later on, for some reason, he performed a kind of martial arts called the Heavenly Demon Disintegration and died. After that, he was reincarnated with the female lead. When they were born, they both carried a jade pendant to recognize each other. There seemed to be lyrics to Persian cats in the middle of the story.