When Feng Zheng woke up the next morning, one thing deeply shocked him! There was no pain left in his body.
He mused, "Can this kind of training also heal the body in some way? Or is it something else? More importantly, is it safe? I need to ask him about this as soon as possible!"
At 5 AM, Renjiro appeared at the Training Grounds as usual, ordering the Genin to begin their exercises.
But today, Feng Zheng said, "Sensei, I have some questions."
Knowing what he was curious about, he replied, "Alright. Hodaka, Mieko, you two go ahead and train first. Feng Zheng will join you later."
Hodaka left curious about what questions Feng Zheng had, while Mieko reluctantly departed, annoyed that Feng Zheng got to slightly escape training.
Renjiro looked at Feng Zheng again and asked, "Is it about the rapid healing?"
Feng Zheng nodded.
Renjiro replied, "It's a side effect of this kind of training. Because you inject Chakra into your body, it activates every cell in your body. This will enhance your passive healing ability and reduce the time it takes for you to recover from fatigue or exhaustion."
He smiled faintly and continued, "This kind of training actually has a few other benefits. It can increase your stamina, and more importantly, it can increase your Chakra reserves."
Feng Zheng's eyes widened at this.
He quickly asked, "Isn't that a bit too good?"
Renjiro chuckled and said, "Not really. While passive healing is good, it's not groundbreaking. As for the increase in Chakra, it's only really noticeable when you first start training and your Chakra reserves aren't very high yet."
"So, while you might see a huge boost in your Chakra and stamina over the next few weeks, the effects won't be as dramatic after that."
This slightly calmed Feng Zheng's excitement, and he fell into thought, musing, "Hmm, well, it's not a huge advantage then. But it's still pretty good. After all, a prerequisite for learning this style is high Chakra reserves. If the effects of learning this style can enhance Chakra reserves, then it can further strengthen this advantage!"
He looked back at Renjiro and asked, "Are there any bad side effects to using this skill?"
Renjiro was a little surprised by this question.
After all, any other 10-year-old Genin would be overjoyed to have such a huge boost.
He remembered that he himself had been ecstatic when he learned this skill.
He replied, "Don't worry, this is a very ancient Senju Clan skill, and it won't have any adverse effects. Besides, considering that my clansmen tend to live longer, it might even be beneficial for your health."
Hearing this answer, Feng Zheng breathed a sigh of relief.
Renjiro looked at him and said, "If you have no other questions, then hurry up and train. Your teammates have already left you far behind."
After thanking him, Feng Zheng began his exercises.
Although the pressure from his Sealing Jutsu had increased significantly, after injecting Chakra, the training actually became easier for him.
Of course, it wasn't foolproof. After all, the moment his Chakra ran out was the moment Feng Zheng felt hellish pain!
Later that day, Feng Zheng discussed the issue of Chakra depletion during morning training with Renjiro.
But Renjiro just smiled innocently and said, "Your Chakra reserves are already large enough to last a whole morning of exercise without running out. It's just that your control isn't good enough. So if you don't want to run out of Chakra during training, then train and improve your Chakra control."
Feng Zheng looked at his teacher's innocent smile expressionlessly.
He would bet that his teacher was secretly laughing at his suffering.
Feng Zheng's training continued in a similar fashion.
Three days passed, and he finally managed to last the entire morning's exercise without his Chakra running out.
By the seventh day, he finally had complete control over the Chakra within his body.
Although it hadn't reached zero loss, the amount of Chakra leaking out was now negligible.
These 7 days of training greatly astonished Feng Zheng. The results of this training were incredibly impressive!
He muttered to himself in disbelief, "In just one week of training, my Chakra reserves have increased by fifty percent!"
In addition to the increase in Chakra, Renjiro had Feng Zheng increase the pressure from his Sealing Jutsu starting on the third day. It had now reached 40%.
For the next month, Feng Zheng focused on correctly mastering the Chakra control of the Senju Taijutsu Style.
After the training, Feng Zheng could finally freely control his Chakra and spar with Renjiro.
During this training, his Chakra increased by another 35-40%.
In just over five months since graduation, Feng Zheng's Chakra reserves had quadrupled! He thought, "This is incredible! I have more Chakra now than Genshu! And he's been an Elite Chunin for at least four years. Ugh, I really want to test the power of my Ninjutsu now."
Unfortunately, he still hadn't received permission to train in Ninjutsu.
With all three students in intense training, Renjiro Squad hadn't taken on any new missions for several months.
Renjiro spent a few more weeks teaching Feng Zheng all the basics of the Senju Taijutsu Style.
During this time, the pressure from the training Sealing Jutsu continued to increase. At this point, it had reached 55%!
Feng Zheng always had to constantly inject Chakra into his body when undergoing rigorous training or sparring. Otherwise, this pressure would slow him down significantly.
If he was doing normal activities, such as walking, running, or resting, the pressure from the Sealing Jutsu wouldn't bother him much. Therefore, Renjiro had Feng Zheng maintain that pressure at all times.
Finally, on a clear night, Renjiro saw a tired Feng Zheng panting on the ground.
They had just finished a sparring session.
He smiled and said, "Well done, kid. You've finally mastered all the basics."
Feng Zheng just nodded. Apparently, he was too tired to reply.
Renjiro continued to smile, "That's enough for today. Take a rest, and you have tomorrow off."
Hearing this, Feng Zheng suddenly looked up. Tears almost welled up in his eyes!
He thought, "Finally, I can rest!"
Renjiro chuckled at his reaction and then shunshinned away.
Feng Zheng rested for a while, then dragged himself through Konoha back to his home, thinking, "Finally! Two months, not a single day of rest. Hodaka and Mieko got a few days off, saying they were going to learn their clan's Ninjutsu. But what about me? I haven't missed a single lesson!"
He fell asleep while grumbling about the unfairness in his heart.