He also said, "I heard that it was Frank and the police of the palace who took people to that place. The police recognized that it was a temporary scene, so they suspected the words of Princess Sara. If the Queen did not protect Princess entirely, I'm afraid the police would have come to interrogate Princess Sara."
"Of course I know!" Lara bit his wine-red thumb and said, "It's more reasonable to set up a scene just to let her escape on her own. But His Majesty dotes on her so much, so she should make good use of this and let His Majesty deal with those who suspected her and kill them! Now that Prince Charlie is dead and she's the heir to the throne, His Majesty will believe whatever she says!"
When Lara knew that Nangong had fled back to the Imperial Palace, he would've definitely aroused suspicion.