Seated in the tree, Hui Yue did not move at all. For the first couple of hours, Lan Feng was in control of their body. This was because Hui Yue was fully focused on controlling the soul copy.
Now he was back in control of the body, but he could not do anything. The sun had not set yet, and the princess was still within the garden. The guards were still all over the palace grounds, and Hui Yue needed the cover of darkness to slip from the princess's mansion to the third prince's mansion.
He also needed to figure out how to break into the mansion and find the third prince, but he understood that everything had to be taken one step at a time. He could not just barge into the third prince’s palace; he had to wait for the opportune moment. This would also make it easier for the blame to shift even more to someone else, as it would have been quite a while since he had left the palace. It would make people more unlikely to link the assassination to Hui Yue.