Among these three sets of medicinal herbs, he just tried them superficially and felt that the potency wouldn't differ much.

However, the focus is different.

If used for daily martial arts practice, combining the Yang Gathering Soup with the Earth Yin Elixir is the most suitable. The medicinal potency is the most gentle, with the least side effects.

However, Lin Zheyu does not use it for daily training. He does not use herbal soups for assistance in his daily exercises; only when using source power to enhance himself does he use them.

Therefore, Lin Zheyu values the price and cost-effectiveness of the herbs more.

Apparently, judging from the price, the Red Fire Blood Nourishing Powder has the highest cost-effectiveness.

It's just that due to the fire poison and drug poison in the herbs used, which are hard to remove, the side effects are too large, making the price so low.

"Please wait a moment."

The shopkeeper said with a happy smile, picked up an abacus, and quickly reached a conclusion: "A total of five hundred and nineteen taels, I can offer a discount, let's make it five hundred and fifteen taels of silver for you."

"Okay."

Lin Zheyu nodded.

Soon, he left the pharmacy holding the herbs along with the recipe for Red Fire Blood Nourishing Powder.

Returning near the courtyard, after confirming no one was around, Lin Zheyu lightly tapped with his toe and leaped into the courtyard.

After returning home, the muscles on Lin Zheyu's face started slightly wriggling.

With just some slight differences in detail, his entire image and temperament transformed drastically, from a dominant, reckless middle-aged man to an ordinary, somewhat handsome scholar.

"Let's first try the effectiveness of the Red Fire Blood Nourishing Powder."

Lin Zheyu said to himself.

He took a wooden basin from the courtyard, poured in clear water, ground a set of Red Fire Blood Nourishing Powder herbs into powder, and poured it into the basin.

The herbs used in Red Fire Blood Nourishing Powder are mostly rare, and though their effects are strong, they contain a powerful fire poison as well.

Therefore, when decocted into soup and consumed, one would experience a symptom of the entire body being as hot as a furnace, caused by the fire poison invading the body.

"When enhancing the Golden Swan Skill before, one unit of source power, needed to be used with six sets of Blood-Nourishing and Bone-Strengthening Soup herbs."

"The herbs used in Red Fire Blood Nourishing Powder are all highly tonic, and the medicinal effects are intense.

Even if they cannot fully meet the energy requirement, they would not lead to a deficit in Qi and blood at most, it merely exhausts the body's Qi and blood power."

Lin Zheyu speculated to himself.

Currently, his body's Qi and blood power reached about eighty percent of the peak state; not the state of being physically exhausted after just breaking through the limit, enhancing power with source.

If the medicinal potency is insufficient, there is still the Qi and blood power available for consumption, which won't lead to a Qi and blood deficit.

Lin Zheyu poured the ground powder into the clear water and stirred it evenly with his hand.

Closing his eyes, he conveyed his thought: 'Use one unit of source power to enhance the Golden Swan Skill.'

Instantly, a vast mysterious energy surged from deep within the cells, pulling the medicinal potency in the basin, infusing it into the waist and legs.

The Ninth Layer of the Golden Swan Skill requires fully integrating the Qi and Blood Burst Skill into it.

The difficulty is high, requiring not only a substantial increase in the control over the body and Qi and blood but also enhancing the toughness of specific muscles and skin membranes in the body.

Otherwise, it simply cannot withstand the violent burst of Qi and blood power.

Lin Zheyu's consciousness blurred for a moment, entering the space of consciousness, commencing endless training.

Unlike training for the Golden Swan Skill before, enhancing the Ninth Layer required Lin Zheyu to try repeatedly and fail repeatedly.

In the continuous attempts and failures, the damage to the body is extremely huge.

Fortunately, in the consciousness space, his body can quickly recover, without concerns over serious hidden injuries.

Lin Zheyu kept trying despite failures; with each failure, he learned from the experience, then continued to improve his attempts.

With each failure, he gained more insights and his control ability grew stronger.

The muscles and skin membranes involved in running the Golden Swan Skill, under constant destruction, gradually strengthened and became tougher.

In the courtyard.

A mysterious energy wrapped the medicinal effects of the Red Fire Blood Nourishing Powder, nourishing and enhancing the muscles and skin membranes of the waist and legs.

After a few breaths, Lin Zheyu slowly opened his eyes and exhaled a long breath of turbid air.

Upon opening his eyes, his first action was not to check the progress of the Golden Swan Skill but to feel his own state.

"The Qi and blood directly recovered to the peak state; the medicinal potency of this Red Fire Blood Nourishing Powder is really strong!"

Lin Zheyu said to himself.

He withdrew his hand from the wooden basin, bringing it under his nose to sniff, still able to smell a faint medicinal aroma.

This means that the potency of the herbs has not been completely exhausted.

"The potency of one set of Red Fire Blood Nourishing Powder is at least stronger than six sets of Blood-Nourishing and Bone-Strengthening Soup. To know precisely how many sets of Blood-Nourishing and Bone-Strengthening Soup it equates to, more attempts are needed."

Lin Zheyu contemplated, being very satisfied with the Red Fire Blood Nourishing Powder.

He looked at the data in his consciousness; the Golden Swan Skill's progress increased by four percent.

Integrating the Qi and Blood Burst Skill into the Golden Swan Skill is much more challenging than imagined, almost impossible to achieve in reality.

If not for the help of the source, allowing entry into that mysterious consciousness space to try, improve, and strengthen the body recklessly, Lin Zheyu would not have succeeded.

[Heavenly Dao Rewards Diligence]

Name: Lin Zheyu

Source Power: 8

Skills:

Golden Swan Skill (Ninth Layer 27%)

Turtle Breath Skill (Third-Layer 100%)

After nearly two months, the Turtle Breath Skill improved to Third-Layer Perfection, and the Golden Swan Skill Ninth Layer progress also increased to twenty-seven percent.

"Continue to enhance, this time use two units of source power, plus one set of Red Fire Blood Nourishing Powder herbs," Lin Zheyu thought to himself.

With eight units of source power remaining, it is enough for him to test how many Blood-Nourishing and Bone-Strengthening Soups one set of Red Fire Blood Nourishing Powder equates to.

Again, he took out a set of Red Fire Blood Nourishing Powder, ground it into powder, and poured it into the wooden basin that still had residual potency.

'Use two units of source power to enhance the Golden Swan Skill.'

As the thought was conveyed, the familiar feeling returned, and Lin Zheyu once again began the endless cycle of training enhancement.

Despite failing repeatedly, he learned from each failure, absorbed experiences, and transformed them into cultivation technique insights.

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