I can't confirm if Douluo's Rebirth of Death was written by the original author of Douluo Continent. Because Douluo Continent is an online literary work created by the Tang family's Third Young Master, and Douluo's Rebirth of Death has not been publicly released, we are unable to confirm whether it was written by the original author of Douluo Continent. If you want to know more about Douluo's Reaper's Rebirth, it is recommended to go to the relevant online literature community or search engine to inquire.