Lei Fan

The Emperor of Fire Country's true love was a maid that was made into a Concubine after he took over the throne but died during childbirth so the Empress took this opportunity to adopt the child but killed him and replaced him with Lei Fan who was a product of an affair she had with a Prime Minister of the Fire Country.

After he was born the Empress no longer cared for Lei Chen and gave approval for the Emperor to plot against him and take the title of 'Crown Prince' away from Lei Chen, including hurting Qu Ling Yue to frame Jun Wu Xie to make her and Hua Yao and Co. switch sides to Lei Fan.

During a banquet to celebrate the winners of the Tournament he took Jun Wu Xie to garden where she took the opportunity to splash medicine on his face to remove the alterations (that make him look like his real mother). Afterwards the Empress asked the Prime Minister (his real father) to send assassins to kill Jun Wu Xie but failed. The Emperor also tried arrest her under the false charges of hurting him only to have Ye Sha feed him a poison that "only the blood of his biological father can save him".

When the Empress heard that the Prime Minister was needed to save Lei Fan she secretly had her people bring him into the palace but was caught getting frisky with each other after healing Lei Fan by the Emperor and Lei Chen.

When the Emperor was punishing the Empress and Prime Minister the 3rd Prince, Lei Xi, came to the palace demanding justice for his Mother who was killed by the Empress because she knew Lei Fan's real identity. Lei Xi poured the same medicine Jun Wu Xie used on him previously and exposed his real face so he was also sentenced to death.