Baili and Ah Da had already instructed these guards to keep their disappearance a secret.
Therefore, when the guard heard Ma Ling asking about the two of them, he said perfunctorily, "The heir and the princess are the masters. There's no need to report to me, a guard, what the masters are busy with."
Ma Ling was very unhappy with the guard's attitude, but he still sensed that something was wrong.
Hence, after returning home, he locked himself in his study and wrote a letter. Then, he asked the messenger pigeon to send the letter away.
Unexpectedly, as soon as his messenger pigeon flew out of the city, it was stopped by people a hundred miles away.
Baili opened the letter and sneered. "This Nine Gate Inspector is quite bold!"
After reading the letter, he went to the bottom of the cliff and searched for traces of the two of them with Ah Da.