After I Became a Titled Douluo, the Seal Was Lifted

Reborn in Douluo Continent, the system was sealed for ten years at the beginning! Ten years later, when he broke through the Titled Douluo, the system said that what he possessed turned out to be twin martial souls, but unlike other people's twin martial souls, his twin martial souls were directly integrated into one and could change forms at any time. He originally thought that what he had was the beast martial spirit Thunder White Dragon. But I didn't expect that the dragon could transform into the weapon soul Dawn Armor...