Xu Qing, of course, knew who Yu Yangzi was, the former persona of Xuantian Taoist and Red Moon, one of the Northern Seven Masters under the Chongyang Sect, known in the worldly society as "Iron Foot Immortal" Wang Chuyi.
For example, the renowned Dragon Knight Yin Zhiping was taught the Lu Technique from Yu Yangzi.
Certainly, in real history, Yin Zhiping was highly skilled and became the Master of the Quanzhen Dao. He first met Ma Yu, which ignited his heart towards Dao, later became a disciple under the immortal Qiu Chuji, studied I Ching from Hao Datong, and received the Lu Technique from Yu Yangzi.
Such sequence in entering the Dao could be said to be impeccable.
Xu Qing pondered for a moment and said, "It’s actually Yu Yangzi’s remains here, not Xuantian Taoist’s; this is very strange."
Feng Wu deeply agreed.
Something was terribly off.
Xu Qing approached Yu Yangzi, firstly performed a disciple’s bow with full formality, then touched Yu Yangzi’s remains.
Yu Yangzi’s remains looked just like a living person, but upon touch, it astonishingly lacked any softness of flesh, but was rather as hard as diamond.
If not covered in a layer of human skin, it would be no different from a mountain rock.
Xu Qing looked towards the bottom of the remains and discovered a leather bag.
"Something is off," Xu Qing remarked as he felt the material of the leather bag with Heavenly Repairing Tribulation Hand—it was not made of ordinary leather, but...
Xu Qing felt somewhat startled.
Moreover, he found that Heavenly Repairing Tribulation Hand could not sense inside the leather bag.
Xu Qing attempted to open the bag, but could not; even Divine Soul Power was blocked.
"What’s wrong with this?" Feng Wu asked upon seeing this.
Xu Qing mused, "Red-haired Yan Kong said he wanted to enter the Inner Treasury to find a Wisdom Sword. I’m thinking, according to what he said, this Wisdom Sword should be something similar to a Magic Artifact. Look, what else could be hidden in this Inner Treasury, aside from Yu Yangzi’s remains and this thing in my hand?"
He had felt the remains with Heavenly Repairing Tribulation Hand and found no other hidden objects.
Additionally, the material of the remains felt as hard as granite.
This was also what shocked Xu Qing; refining his own body to be as hard as granite, should it be considered impressive or horrifying?
"Do you think the item is in this bag?" Feng Wu, being so sharp, directly voiced Xu Qing’s thoughts.
Xu Qing nodded, "But it’s strange; I can’t open it. Can you try?"
Feng Wu tried but also could not open it.
Xu Qing said, "It seems we can only try with the Innate Qi."
He had just used Innate Finger, so he was reluctant to use the Innate Qi, but finding no other method, he had to try.
In Daoism, Qi is an extremely important element, especially the Innate Qi cultivated by Xu Qing, which is known as "Heaven and Earth Mysterious Sect, the root of all Qi."
In terms of martial arts novels, others have postnatal True Qi; his is Innate True Qi.
Others have the female, he has the male!
When Xu Qing infused his Innate Qi into the leather bag, his complexion turned pale instantly.
However, momentarily he felt a blood-flesh connection with the leather bag, and his Divine Soul imprinted itself inside.
From then on, the leather bag became his own unique Magic Artifact, unpossessable by others unless he was killed and the Soul Imprint inside was erased by an immensely powerful Divine Soul Expert.
From his current perspective, perhaps only Elder Fang could do that.
His Divine Soul thoughts entered the leather bag and discovered a space about the size of that small utility room in the old Li family house.
Xu Qing was initially delighted, then felt somewhat dissatisfied and muttered, "It’s not that big."
Feng Wu’s face darkened.
Xu Qing looked up at Feng Wu and hurriedly said, "I wasn’t talking about you."
Feng Wu huffed, asking, "Did it open?"
Xu Qing did not conceal it and directly shared the general situation inside.
His thoughts moved, and a manual appeared in his hand.
He flipped it open, "This is Yu Yangzi’s manual, recording his daily cultivation insights and many of his personal experiences."
Just a brief browse was enough to thrill Xu Qing.
He continued, "Having this manual is better than all other treasures in this treasury."
Feng Wu retorted, "Then don’t bother taking anything else?"
Xu Qing coughed, then silently recited the Xuantian Marvelous Sound Marrow Cleansing Technique from the stone wall. The Marrow Cleansing Secret Method, every major Holy Land has its own methods, but undoubtedly, without a Marrow Cleansing Secret Method, even if one comprehends the realm of a Martial Arts Grandmaster, one cannot become a true Martial Arts Grandmaster.
However, if you can comprehend the realm of a Martial Arts Grandmaster, spending time, you can also deduce your own Marrow Cleansing Secret Method. Of course, this certainly cannot compare to the summary of secrets passed down by other Holy Lands generation by generation.
For a person, it’s indeed sufficient.
Because what you deduce on your own will definitely suit yourself.
But to use it for inheritance is not enough.
And Xu Qing’s Tiger and Leopard Thunder Sound, reaching the highest level, can also cleanse marrow.
However, having two such secret techniques is naturally better, as they can verify each other, find deficiencies, and continue optimizations.
Having is better than not having.
Both he and Feng Wu were memorizing it.
Feng Wu inherently had a talent for enjoying Dao, and while browsing, discovered that the Xuantian Marvelous Sound Marrow Cleansing Technique was divided into two melodies: Heaven and Earth.
Xu Qing also noticed this and smiled, "It seems heaven has destined us to cultivate this Xuantian Marvelous Sound Marrow Cleansing Technique."
Feng Wu suddenly felt melancholic, "It appears this was the marrow cleansing secret technique used by the Xuantian Taoist and that senior of our Annihilation Dao back then. They, too, were dual cultivation partners, but unfortunately, it didn’t end well in the end."
"Then let’s achieve a perfect ending for them," Xu Qing knew, after all, Feng Wu was a woman and inevitably sentimental. Not to mention her, even Xu Qing himself occasionally felt melancholic over matters of lifespan.