He Came to Power Through the Exchange of Marriages

[Twins exchange marriages + palace fights + the extreme pull between the stunning busty beauty and the scheming emperor] Of the two beauties of the Fang family, one entered the palace and the other married the second son of a marquis, but in the end their fates were completely different. Fang Yingchun couldn't bear such a gap, so she set fire to herself and the concubine Fang Yingqiu, whom she hated, but she didn't expect that fate would give her a chance? What choice will she make this time?