Gu Dai recalled the guard's words and inquired with curiosity, "How did you come to know about us?"
The guard replied with a smile, "The news of the princess inviting you to her birthday banquet has already spread throughout the castle."
As his words trailed off, they arrived at the garden.
The guard announced, "Here we are, you can go back now."
Gu Dai responded with a smile, "Thank you. Without your guidance, we might have gotten lost in the castle and couldn't find our way back."
After the guard had left, Gu Dai whispered to Su Ting, "It's time for us to act."
Su Ting agreed, "Alright."
The two were fortunate; they explored the castle for several hours without being detected by the guards, yet they found no clues.
Su Ting frowned slightly, "There's no disturbance in the castle; perhaps it wasn't someone from the royal family who captured uncle and auntie."
Gu Dai nodded, "Possibly."