Yeah, that was what happened in the series and novel as well.Originally Posted by cherrie
Cheng Zhi went into the palace to kill the Emperor and came upon Cheung Ping who was begging her father to leave to safety, but the Emperor went mad and wanted to kill her, but missed and chopped her hand off. Cheng Zhi tried to stop him but it was too late.
Thatt's how he found out she was the princess, and he understood why she said she could never go against the Emperor for him. He still wants to kill the emperor, and the Emperor lets him, but Cheung Ping begs him not to and she faints. Cheng Zhi then takes her away.