Trasnmigration: Promise You the World

When a strong woman transmigrated to become an outcast, Guan Xiaoyu was forced into a multinational war. 
To do the best for oneself or to help the whole world? Guan Xiaoyu's choice was to turn over the situation and sing to the serfs! The Dark Prince of the Fire Nation? Let him marry himself; the cruel and insolent bully of the Golden Kingdom? It could be considered the best use for fireworks. This... He didn't know if the young duke would have any objections after accepting it; a husband who played the fool? Let's play with him for a bit to travel to another world!
When the ugly idiot returned with a beautiful and intelligent transformation, he would turn into an enemy in the blink of an eye and laugh as he called out to her, 'Lord Phoenix is from another world' wasn't a big deal! One conspiracy, one battle, who was the one laughing to the end as the winner? And to see the legendary life of the strong woman Guan Xiaoyu.