Early the next morning, Lin Feng set off for the Heaven Dou Empire with Qian Renxue and her entourage.
Qian Daoliu had no negative feelings about Bibi Dong's ambition to make the Spirit Hall dominate the continent.
After all, he would soon pass away. As long as Qian Renxue could undergo the divine trials and become a god, nothing in the world could stop the Spirit Hall.
Moreover, this wasn't the later period when Title Douluos were everywhere.
On the surface, Heaven Dou Empire only had two Title Douluos, both belonging to the Seven Treasure Glazed Tile Clan—the Sword and Bone Douluos.
Dugu Bo was still only a Soul Douluo.
To ensure the success of the mission in its early stages, Qian Daoliu directly dispatched four Title Douluos: the Snake Spear Douluo, the Thorned Douluo, and the Chrysanthemum and Ghost Douluos.
With four Title Douluos and the safeguards Qian Daoliu had placed on Qian Renxue, the mission was as secure as it could be.
In the carriage heading to Heaven Dou City, Lin Feng chatted casually with the Chrysanthemum Douluo.
"Senior, what you said makes a lot of sense."
Yue Guan's delicate face showed a hint of pride. "Of course. When it comes to the study of flowers and plants, I dare say no one in the soul master world surpasses me."
Lin Feng smiled warmly and took out a slightly ancient book.
"When it comes to the study of flowers and plants, I naturally can't compare to you, Senior.
But please take a look at this book. The things recorded in it might pique your interest."
"Oh?"
Yue Guan's curiosity was piqued, and he reached out to take the book.
The moment he opened it, he was greeted with vivid illustrations.
Yue Guan's eyes widened, and he instinctively pulled the book closer to himself. "This... this is outrageous!"
"Xiao Feng, what did you give him? I want to see too, Grandpa Ju!"
"Ahem, ahem, Young Mistress, wait a moment. Kid, what kind of book is this?"
Lin Feng waved his hand. "Just keep reading, Senior."
Yue Guan dodged Qian Renxue's attempt to peek at the book and flipped to the next page.
Qian Renxue pouted, clearly dissatisfied.
"Hmm? This is interesting."
The book detailed the uses of whale glue. To provide a plausible explanation for the discovery of whale glue's effects, Lin Feng had started with its use in intimate matters, accompanied by vivid illustrations, followed by a few examples of unusual discoveries.
"Whale glue can strengthen the body? I've never heard of that."
Yue Guan, who had sealed his heart and remained a pure boy to this day, had no reason to explore such matters.
Well, except for one eternal companion—the Ghost Douluo.
Lin Feng sometimes wondered if their martial soul fusion skill had made them lose interest in the opposite sex.
Otherwise, why wouldn't they at least leave behind an heir?
For a top-tier spirit like the Golden Chrysanthemum to disappear into the river of time was just too absurd.
"Whale glue?"
Qian Renxue's face turned slightly red, and she pinched Lin Feng. "Isn't that something nobles use for... that kind of thing? Xiao Feng, you're not learning good things."
"I'm interested in its other uses. Senior, let Xue'er take a look."
As he spoke, Lin Feng winked.
Yue Guan discreetly tucked away the first few pages, which were unsuitable for Qian Renxue's eyes, and handed her the remaining pages detailing the functions of whale glue.
Qian Renxue looked puzzled. "Why does it feel like a few pages are missing?"
"It's normal for ancient books to have some wear and tear, right, Senior?"
Yue Guan nodded solemnly.
Those novel illustrations would have to be studied in detail later. His eyes gleamed as he thought, maybe he could invite Old Ghost to take a look together?
Qian Renxue hummed in agreement.
"But what's the use of this?"
Lin Feng waved his hand.
"There's a widely known theory in the soul master world that you've all heard of.
The theory of soul ring limits.
The first and second soul rings have a limit of a hundred years, while the third and fourth have a limit of a thousand years.
This seems like an unchangeable rule, but in reality, it's not."
Hearing this, Yue Guan also caught on.
He nodded and said, "That's right. High-level soul masters should know that for soul rings below ten thousand years, as long as the body is strong enough, the soul ring's limit can be increased.
If whale glue really has this effect, it might be possible to attach a thousand-year soul ring as the second ring.
But that's also a matter of luck. This thing comes from coastal areas and requires thousand-year or ten-thousand-year quality whale glue.
Moreover, what's written in this book still needs to be verified. The exact effects of whale glue are still unknown."
Lin Feng continued, "Exactly. And because of the nature of martial souls, those with high-level martial spirits inherently have an advantage in physical strength.
For example, the Clear Sky Hammer and the Blue Silver Grass. The physical strength of their users at the time of awakening is completely incomparable."
Qian Renxue frowned. "I have innate soul power of level 20, and my martial soul is the Seraphim. Logically, my physical strength should far exceed what's needed for a hundred-year soul ring.
So why did Grandpa insist on me attaching a hundred-year soul ring?
Thinking back, when I absorbed my soul ring, I didn't feel any pain at all. It went surprisingly smoothly."
Lin Feng smiled. "You're the Grand Worship's precious granddaughter. It's better to be safe. There's no need to take risks for a slight increase in the soul ring's years."
Qian Renxue understood, but her pretty face still showed a hint of dissatisfaction. She grumbled inwardly that Grandpa had underestimated her. If she couldn't handle a little hardship, how could she be Qian Renxue?
Lin Feng, noticing the expression on Qian Renxue's face, couldn't help but think of the original story.
She had been overly protected by Qian Daoliu and the elders of the Spirit Hall, which led to her later arrogance and underestimation of other soul masters.
Otherwise, she wouldn't have let Tang San go multiple times.
Qian Renxue pouted. "Forget the past. My fourth soul ring must be ten thousand years!
Grandpa Ju, send a message to Grandpa now. Have him compile the physical data of Soul Kings. When I return, I want to try this whale glue."
Uh...
Yue Guan broke out in a cold sweat. Grand Worship, this isn't my fault. It's all Lin Feng's doing.
"Xue'er, there's no need to rush. Even without attaching a soul ring, your soul power level will still increase. If you really want to do this, we need to make thorough preparations."
"Oh, I see. Xiao Feng, you brought this up because you want us to look for it, right? After all, your body still needs strengthening."
Qian Renxue remembered that Lin Feng had mentioned his body's incomplete construction and quickly asked.
"Exactly. I've already discussed this with the Grand Worship. He's arranged for people to search the coastal areas.
The reason I brought it up here is that we're heading to Heaven Dou City.
There, we'll find a bunch of nobles. The chances of finding whale glue of the right year there might be even higher."
"I see. Kid, leave it to me. I'll take care of this."
Yue Guan patted his chest confidently. He greatly approved of Lin Feng's ideas regarding flowers and plants.
These days, finding a man who loves flowers was truly difficult. Even Old Ghost didn't share his passion.
On the other hand, since he would have to take the blame with the Grand Worship later, doing something now would ensure Lin Feng couldn't fault him for not taking responsibility.
Half a month later, the group arrived in Heaven Dou City.