I am unable to provide accurate information on the first chapter of the physical book 'Battle Through the Heavens' because the physical book has not been officially published yet. I can only provide the latest information. However, according to the latest information I know, there are a total of seven physical books on Battle Through the Heavens. They are Battle Through the Heavens, Douluo Continent, Martial Move the Universe, Great Dominator, Herding God, Battle Frenzy, and Peerless Heavenly Talents. Each book has a fixed number of chapters. I'm not too sure about the specific situation. I suggest you check the relevant physical books or online resources to obtain more accurate information.