The Martial Unity

It explained why the Beggar Sage was unable to know the exact location of the Divine Doctor.
"Is that all?" Rui narrowed his eyes. "Follow the chaos' is not advice that is worth nearly a billion gold coins."
The Beggar Sage cackled. "That is true. However, I can give you the Divine Doctor's location before he entered the Beast Domain. While I do not know where he went to the Beast Domain, I can definitely tell you where he entered it."
Rui's eyes lit up in interest. "That would definitely be helpful. I will definitely be needing that service."
"I'll have it sent to you," the Beggar Sage dismissively replied.
"What about his appearance?" Rui narrowed his eyes. "I need an identifier to know that he is the person that I am looking for."
"Kekeke, I'm afraid not," the man cackled. "Appearances mean nothing to any human sage, but especially not to the Divine Doctor. He can change his appearance like he changes his clothes."
Rui's eyes widened with surprise.
That was something that Master Reina accomplished with a Master-level technique. The fact that he could accomplish that with his mastery of human physiology was rather shocking.
It also explained part of why he was almost impossible to track.
"Anything else?" Rui narrowed his eyes.
"One thing you need to pay attention to is the manner in which he survives the Beast Domain," the Beggar Sage advised. "If you already knew that he was in the Beast Domain, then don't you wonder how he survives there as a human?"
"I do," Rui thoughtfully replied. "I presume it's due to his knowledge and expertise."
"He is not an expert of the Beast Domain; I can assure you of that much," the Beggar reassured. "He uses expertise in medicine and biology to arm himself with solutions to things that would ordinarily kill any ordinary human instantly. When you understand the depths of anatomy and physiology that he does, you are able to use it beyond just for diagnosis and treatment."
The Beggar Sage grinned. "However, because his solutions are so unique, they will undoubtedly leave markers and outcomes that are especially unique. Thus, what you need to pay attention to is not just chaos but unique chaos. That is the only way to track the Divine Doctor in the Beast Domain."
Rui was getting a headache.
The Divine Doctor's covert practices were so effective that not even the Beggar Sage could advise him beyond 'look for unique chaos.'
However, it was extremely useful to gain the entry point into the Beast Domain to Divine Doctor had taken. When within the Human Domain, the Beggar's Sect was top dog in the intelligence industry, it appeared that even the Divine Doctor was subject to.
The issue was the Beast Domain.
'If only the Divine Doctor wasn't in the Beast Domain,' Rui heaved a sigh. "You were just thinking, 'if only the Divine Doctor weren't in the Beast Domain,' weren't you?" The Beggar Sage cackled. "I can understand your sentiment."
"What is he even doing in the Beast Domain?" Rui narrowed his eyes. "He's a doctor. He's not supposed to be anywhere near the Beast Domain."
"Tsk tsk," the Beggar Sage tutted disapprovingly. "So prejudiced. Are doctors not allowed to enter the Beast Domain?"
"Don't be sophistical," Rui narrowed. "You know what I mean. What is his purpose in being in the Beast Domain?"
"The answer to your question is quite simple," the Beggar Sage grinned. "The Divine Doctor is always true to his profession no matter what. His purpose for any action is always true to his profession."
"True to being a doctor? In the Beast Domain?" Rui raised an eyebrow.
"What do doctors do?" The Beggar Sage inquired with amusement.
"...diagnose, treat, and cure."
"Exactly."
"You're telling me that he's meeting a patient in the Beast Domain?" Rui frowned.
"No, he has already met the patient," the Beggar Sage grinned. "He entered the Beast Domain to diagnose the illness."
Rui frowned. "That makes no sense whatsoever."
"Kekeke!" The Beggar Sage cackled. "I'm afraid I cannot divulge the truth of this particular matter, young Prince of the Void. You will have to learn the truth from him if you want to know. After all, I would not want him to blab all the important secrets he knows about me."
Rui frowned as he considered the man's words.
He had already met the patient.
He entered the Beast Domain to diagnose the illness.
The phrasing of this particular statement was pointedly strange to Rui. If the patient was in the Beast Domain, then why not just say, 'He is in the Beast Domain to treat the patient'?
But he denied that the Divine Doctor was entering the Beast Domain to meet the
patient.
How did one diagnose an illness without meeting the patient?
Rui narrowed his eyes as an absurd possibility popped into his mind
"Forget the purpose of his entry into the Beast Domain," the Beggar Sage advised, drawing his attention. "It isn't going to help you find the Divine Doctor; I can assure you of that much. The best way to find him in the Beast Domain is to
follow his lingering trails."
Rui narrowed his eyes at those words.
It certainly was true that he didn't give a damn about the Divine Doctor's purpose in the Beast Domain if it didn't help him find him. It simply didn't matter what crackpot reason the Divine Doctor had chosen to do something as insane as personally entering the Beast Domain as a human doctor.
"... Fine, anything else I should know?" Rui huffed.
"Hehehe," the Beggar Sage started cackling at Rui's frustrated tone. "Don't be
like that, young Prince. The location of the Divine Doctor's entry into the Beast Domain and his path around humanity is something that no other organization in the world can tell you. I can assure you that I alone am the only one who possesses this knowledge. You won't regret purchasing it from me."