[Never mind the Grand Elder's curiosity about Yu Xiaogang's situation, even Yu Xiaogang himself was curious about what was going on with his Martial Soul Possession.]
[Logically speaking, the primary benefit of one's Martial Soul Possession should be an improvement in physical fitness.]
[While there are improvements in other areas, they certainly shouldn't be too significant.]
[But what was going on with him?]
[His physical fitness had indeed improved, but compared to other aspects, such as the increase in total spirit power, the improvement in physical fitness was actually not that much.]
[This was a bit abnormal.]
[After all, logically speaking, with a massive size like Little Dragon's, the physical fitness improvement brought by Martial Soul Possession should be terrifying.]
[But that wasn't the case.]
[Although his physical fitness had improved, it wasn't the main part.]
[He had never heard of a Beast Spirit Spirit Master whose physical fitness improvement from Martial Soul Possession was less than the increase in total spirit power.]
["Father, when I fought you in close quarters just now, how did it feel?"]
[Yu Xiaogang looked at Yu Yuanzhen, the person who had personally experienced the intensity of his attacks.]
["Well, how should I put it..."]
[Yu Yuanzhen opened his mouth to offer an evaluation, but just then, the Grand Elder suddenly raised his hand to stop him.]
[After stopping Yu Yuanzhen, the Grand Elder looked at Bibi Dong beside him with a smile.]
["Young Miss Bibi Dong, could we please ask you to excuse yourself for a moment?"]
[Hearing the Grand Elder's words, Bibi Dong, who had been standing silently beside everyone listening, finally snapped out of it.]
[Now that Yu Xiaogang and the others were discussing the situation of Yu Xiaogang and his Spirit, it was best for an outsider like her not to listen.]
[No Spirit Master would be willing to expose the secrets of their Spirit.]
["I'm sorry, I was just about to finish my daily training and came to the Training Ground, which is how I saw your battle."]
[Bibi Dong said somewhat embarrassedly.]
["It's fine, it's fine, as long as you don't tell anyone."]
[Yu Xiaogang waved his hand, not caring much about Bibi Dong watching.]
[As long as the core secrets weren't told to Bibi Dong, simply watching a battle was nothing; after all, he would be going to Spirit City later and would still spar with Bibi Dong.]
[Even if she didn't see these things today, she would have the chance to experience them personally in the future.]
[Of course, Yu Xiaogang wouldn't stop the Grand Elder's move to send Bibi Dong away.]
[The Grand Elder was doing this for his sake, and there was no need for him to go against the Grand Elder on such matters.]
[So, under the gaze of Yu Xiaogang and the other two, Bibi Dong left the Training Ground and went to another Training Ground to complete her daily training.]
[However, on her way out, Bibi Dong looked back frequently, though it was unclear what she was looking at.]
["Hehe, you brat, you don't have any sense of vigilance at all. Have you already started treating that girl as one of our own?"]
[Yu Yuanzhen chuckled and looked at Yu Xiaogang.]
[His son was normally steady; under normal circumstances, sending Bibi Dong away shouldn't have been done by the Grand Elder, but by the person involved.]
[But Yu Xiaogang hadn't done so.]
[This only proved that in Yu Xiaogang's heart, Bibi Dong was classified as a trustworthy person, like himself and the Grand Elder.]
[He subconsciously didn't feel the need to send Bibi Dong away when discussing these things.]
["...Cough, alright, we can talk about those side issues later. What's more important now is to figure out the specifics of my Martial Soul Possession."]
[Yu Xiaogang fell silent for a moment, then coughed a few times, forcefully changing the subject.]
[In fact, he hadn't expected his level of trust in Bibi Dong to be so high.]
[According to his personality, under normal circumstances, he should have remained vigilant toward outsiders, just as his father said.]
[Even toward internal members, Yu Xiaogang wouldn't reveal everything about himself.]
[In the entire Douluo Continent, the only person Yu Xiaogang could trust without reason was probably his father, Yu Yuanzhen.]
[But for Bibi Dong to be so trusted by him, what did that mean?]
[Yu Xiaogang rubbed his head and ignored the question for now; he would have plenty of time to think about it in the future.]
[What was more important at the moment was the issue of Little Dragon's Martial Soul Possession.]
["Father, how did you feel during our battle earlier?"]
[Yu Xiaogang took out a Notebook, prepared to record what his father said.]
["Well... simply put, your Martial Soul Possession provides a very good improvement in physical fitness."]
["Things like speed and power are on completely different levels."]
["I was quite surprised when I fought you earlier."]
["I originally thought your improvement in physical fitness was impressive enough, but from the subsequent battle, it seems your spirit power improved even more, right?"]
[Hearing Yu Yuanzhen's summary, Yu Xiaogang nodded.]
["I also feel that the spirit power has improved significantly. What's going on?"]
["Neither the Family's Library nor the Spirit Hall's Library has any record of a similar situation."]
[Yu Xiaogang was puzzled, and Yu Yuanzhen also fell into deep thought.]
[The Grand Elder on the side also took the opportunity to add his findings.]
["Also, Xiaogang, your physique after Martial Soul Possession isn't quite right either."]
["How so?"]
[Hearing the Grand Elder's words, Yu Xiaogang looked at him, wanting to hear his insight.]
["It's the physique after Martial Soul Possession."]
["You only need to think about it for a moment to understand. For those Spirits with massive bodies and powerful physical fitness, after Martial Soul Possession, the Spirit Master's body will involuntarily become stronger."]
["Like our Sect's Blue Lightning Tyrant Dragon, after Martial Soul Possession, even a very weak person will become far more robust than a normal person."]
["Besides that, it's the same for Spirits like bears, oxen, lions, tigers, rhinos, and elephants."]
[Hearing the Grand Elder's words, Yu Xiaogang went through the examples in his mind and then nodded.]
["That's true."]
["But despite Little Dragon's size, when you complete the Martial Soul Possession, your physique hardly changes at all, which is very unreasonable."]
[Hearing the Grand Elder's words, Yu Xiaogang nodded again.]
[Indeed, it was unreasonable.]
[Why was his Martial Soul Possession like this?]
[Yu Xiaogang organized the situation of himself and Little Dragon from the beginning.]
[As a Spirit Master, he had abundant spirit power, but his physical fitness certainly couldn't compare to the continuously evolving Little Dragon.]
[And Little Dragon, as a Spirit, was comparable to a Spirit Beast with incredibly powerful physical fitness.]
[Before Martial Soul Possession, the two of them were separate individuals.]
[During Martial Soul Possession, Little Dragon turned into light and merged into his body.]
[After Martial Soul Possession, his physique didn't change much, but instead focused on increasing the total amount of spirit power.]
[His Martial Soul Possession was more like a Body Integration between himself and Little Dragon, specifically strengthening his specialties as a Spirit Master, allowing him to possess power far exceeding that of an individual.]
["Hmm? Why does this seem a bit familiar?"]
[Yu Xiaogang frowned.]
[Two entities performing Body Integration, and after the Body Integration, possessing abilities far exceeding the individual.]
[Such examples in the Douluo Continent...]
[Suddenly, as if he had thought of something, Yu Xiaogang's eyes widened.]
["Hiss, no way..."]