That night, Xiaofan didn't sleep well at all. Ren Zhongtian turned out to be such a formidable figure, yet in the end, he saved him regardless of the dangers to himself because of a special forces soldier.

Perhaps after all these years, Ren Zhongtian has seen through life. Or maybe he knows he doesn't have much time left and just wants the younger generation to live better.

The next day, when Xiaofan got up, he saw Grandpa moving the large wooden barrels from the warehouse to the courtyard. Several large pots were brewing herbal concoctions nearby. Grandpa used small wooden buckets to transfer the herbal concoction from the large pot into the large wooden barrel. Then he refilled it with clean well water and continued to add firewood to simmer.

"Get up, take off your clothes, and get in."

"Huh? No, Grandpa, I haven't washed with this thing in a long time." Xiaofan said, pouting.

"If I tell you to get in, you get in. Why so much nonsense?"

"Okay."

The water was a bit hot, but Xiaofan still followed Grandpa's instructions, took off his clothes, and sat in the large wooden barrel.

"Your body simply cannot withstand the thirty-plus years of inner strength that Ren Zhongtian cultivated through bitter practice. Therefore, it is necessary to use herbal concoctions now to consolidate the meridians in your body, making them more resilient, thus successfully transforming those thirty years of inner strength for your use. The reason you always get dizzy after fighting is because he sealed your meridians beforehand. Moreover, since your Ren and Du Meridians are not open, when you fight, it triggers that inner strength, causing it to clash in your Dantian, crashing into the Huihai acupoint. If that inner strength breaches other acupoints, then the meridians in your body would instantly shatter, leading to your whole body exploding and dying. He probably knows you are my grandson, which is why he transferred this inner strength to you. He gave all his effort just to leave this power behind, indicating that he was already at his limit back then."

After Grandpa's explanation, Xiaofan roughly understood. As expected, ordinary doctors couldn't know these things, but Grandpa was different. He was originally from Yanhuang Soul and knew Ren Zhongtian very well. So, he discovered the 'root of the problem' in his pulse the instant he checked it.

"How long do I have to soak in this wooden barrel?" Xiaofan asked softly.

"Eight hours a day, for half a month continuously."

"Ah, that long..."

"Take this book and read it again."

"Hmm? Isn't this the acupuncture diagram you taught me before? I've memorized it." Xiaofan reached out to take the book, asking in confusion.

"Review it once more, I stayed up all night adding some inner strength circulation methods and detoxification content. You won't easily give up on that girl called Shen Zuimo, right?"

"Huh?" Hearing Shen Zuimo's name from Grandpa's mouth, Xiaofan was somewhat speechless.

"When your grandma passed away, your father was only ten. Back then, I felt despondent and didn't educate him as much as your two uncles. Later, he got married at a young age and became a father at twenty. In the end, he worked hard everywhere for a living, and always felt somewhat owing to you two father and son. But unexpectedly, the ones who accompany me during every Chinese New Year are you two. The eldest and the second are in the Capital City, busy that they don't even have time to come back. I don't even know what my other grandchildren look like now." In fact, Ye Aotian was quite bitter. Yearning for family around is not a shameful thing.

"Otherwise, Grandpa, you should move out too. After all, there are now other private clinics here." Xiaofan said.

"No, this is the place where your grandma and I lived together. I don't want to leave. Xiaofan, you have a personality quite like when I was young, I know you definitely won't give up on that girl named Shen Zuimo so easily. Just like I would abandon everything for your grandma back then. So, you should stay here for now, take care of your health, and memorize that book completely. If a blockhead like you goes out and fights with people from the Red Butterfly, you would definitely be killed immediately. I don't want you to die. I still want to see you give me a great-grandson to play with."

"She's gone, I'm afraid there won't be a chance." Xiaofan said helplessly.

"Nonsense. As long as you have enough strength, anything is possible. Or else, do you want to be like your dad, driving a broken car, hustling all his life?"

"Haha, actually, my dad is quite happy, enjoying a simple couple's life with my mom over there, relaxed and easy-going."

"Sigh, if you want to be like your dad, I definitely won't stop you. You can get out of this wooden barrel right now, and I can seal that inner strength for life with silver needles." Ye Aotian pouted and said.

"Hehe, Grandpa, that's left by Elder Ren, wouldn't it be a waste not to use it."

"Tch, you brat..."

Time quietly passed by like this. In the daytime, Xiaofan soaked in the medicinal barrel, while listening to Grandpa's explanations about the functions and uses of the body's meridians and acupoints.

Only then did Xiaofan understand why Grandpa was once called one of the Three Great Heavenly Kings of Yanhuang alongside Ren Zhongtian and another person. Back then, Grandpa's fighting power was probably like one of the Five Ghosts today. However, what made him revered was his extraordinary medical skills in saving lives.

Indeed, Xiaofan learned from the exposition that injuries were likely to occur in battles, and timely treatment was the most crucial aspect. Therefore, the combat members of Yanhuang Soul at that time liked to go on missions with him because they knew Ye Aotian always prioritized saving lives. Especially in remote places far from effective medical aid, his extraordinary silver needle hemostasis was truly stunning.

In the blink of an eye, half a month had passed.

Xiaofan was finally relieved from the wooden barrel. However, the next task was to gradually open up the Eight Extraordinary Meridians. To reduce Xiaofan's pain, Ye Aotian opened one meridian for Xiaofan each day.

It took eight days, from Yin Wei and Yang Wei to Ren and Du.

Every time it came to Meridian-Opening, Xiaofan had to endure immense pain, especially the final breakthrough of the Ren and Du Meridians, where the pain lasted for ten minutes without breaking through the dozens of small meridians. If Xiaofan hadn't gritted his teeth and kept himself from passing out from the pain, it would have been impossible to complete in these eight days.

However, how to utilize this inner strength? Although he knows such a powerful force exists within his body, without being able to use it, it is still equivalent to nothing.

"Xiaofan, Ren Zhongtian's most impressive trait was his speed and quick movements. Now, you should first enhance your speed. If you can't win a fight, at least you can outrun it."

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