I Have Tens of Billions of Dragon Souls in the Sui Dynasty

Time travels back to the Sui Dynasty, when the emperor was supposed to wake up and take control of the world, but he was drunk and lying on the lap of a beautiful woman, but he was told that his country was about to be destroyed. Start with tens of billions of dragon souls, unlock summoned characters, and save the situation with great perseverance. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.