"Teacher Mu Yue, how long have you persevered this time?" Obito wiped the water stains on his face and looked at Muyue expectantly.

He felt like he had been on the river for a long time, maybe for an hour.

"This time I did a good job and lasted 20 minutes." Mu Yue praised without hesitation.

"Huh? It's only been twenty minutes, and I thought it would be at least half an hour. Obito was a little disappointed.

On the surface of the river, he not only has to maintain the output of chakra at all times, but also pays attention to Mu Yue's water escape, observes the waves on the river, and is ready to dodge at any time, always ensuring that this state makes it feel like a long time has passed.

"Chakra controls the cultivation, you have completed it, and you can start the cultivation of the nature change." Mu Yue said with a smile.

"Well, I'll go down right away." Obito has been practicing treading water recently, and subconsciously walked towards the river, and took a few steps before he realized what Mu Yue said.

"Finally I don't have to tread water." Obito couldn't help but clench his fists and jump up in cheers, and quieted down when he noticed that both Shisui and Maitkai were looking at him.

"Recently, I have been stepping on water every day, and I am a little used to the smell of the river here." Obito couldn't help but complain.

Treading water is not as good as climbing a tree, as long as you adjust it yourself or Mu Yue picks it up quickly, it's fine.

Treading water and not controlling it well, it was really a sip of water.

Fortunately, there are no people here, and the river water is clean and clear, so there is no strange smell.

"Then you want to practice again?" Mu Yue asked jokingly.

"Forget it, I want to take a detour when I see the river during this time." The tortured Obito chose not to be tough this time.

"It's better to start the change of nature early, there are only fourteen days left before the competition." Obito feels that time is a little tight.

Next, in addition to the change in nature, you also have to deepen the proficiency of Howe Fireball.

"According to my schedule, there will be enough time." Mu Yue reassured Obito.

This is just cultivating to participate in a folk competition, and it is not going to fight Payne after cultivating, so there is no need to exaggerate the nature change.

With the blessing of the professor's skills, plus Mu Yuehao's fireball has reached the proficiency level, it is very simple to let Obitu improve the level of Hao's fireball.

After all, it was about the reward of the cultivation task, and Mu Yue had made a serious plan.

Soon, Mu Yue's shadow clone brought a large wooden barrel, and Mu Yue opened the wooden barrel and took out an egg-sized ice cube from it and handed it to Obito.

"Put the ice cube on the palm of your hand and use the chakra to change the nature of the ice cube to melt it." Mu Yue said about the cultivation process of the first step of the nature change.

In the process of ninja practice, the change of nature can be regarded as a more difficult and high-end practice.

Even if you have enough chakra, but you don't have enough level of change in the nature of ninjutsu, the power of ninjutsu will be limited.

The practice of changing the nature of fire is a little more dangerous than that of wind, because the burning nature of fire may affect the caster.

At first, Mu Yue wanted Obito to burn the leaves, but if Obito couldn't instantly turn the leaves into ashes, then Obito's hands would be burned by the burning leaves.

So Mu Yue thought of the ice cubes, because the temperature was low enough, so when it encountered flames, it would only melt into water, and the flames with soil were not enough to boil the water of the ice cubes.

"It's cold." Obito, who was holding the ice cube, gasped, it was still spring, and the temperature was not high in the morning when the sun was not great.

"Then release Chakra." Mu Yue put her two fingers together and knocked on Obito's head.

Obito was in pain, shrunk his neck, and began to guide his chakra towards the palm of his hand, and released it after changing its nature.

"When making a change of nature, keep in mind the characteristics of the flame, burning and high temperature, so that your chakra burns and increases the temperature." Mu Yue reminded.

Obito stared at the ice cube in his hand and nodded, silently reciting the words burning high temperature in his heart.

Two minutes later, Obito felt a stream of water appear on the palm of his hand, and his face instantly turned happy.

"Teacher, the ice is melting!" Obito said happily.

"Why don't you take another ice cube and hold it in your hand for a few minutes?" Mu Yue said.

Obito curiously threw away the ice cube in his hand, and took a piece of ice that was about the same size again, holding it in his hand without using chakra.

Then he was embarrassed to find that the degree of icy water was only slightly worse than just now.

"The human body also has a temperature, and if you hold an ice cube of this size in your hand, you won't be slow to melt without chakra." Mu Yue stroked her forehead and explained.

Fortunately, the weather is not hot now, and if it is summer, Obito must not think that he is a little genius with a change in nature.

"Hehe, I use my mouth when I use ninjutsu, and now I'm a little unaccustomed to using my hands." Obito explained, scratching his head.

"When making a change of nature, you must always remember the nature of the flame." Mu Yue said as she took out a piece of ice the size of a human head and held it in her hand.

Zizizi!!

At the moment when Mu Yue finished speaking, the red light flashed, and the ice cubes the size of a human head immediately turned into bursts of white smoke, and directly turned into water vapor and floated into the sky.

"High temperature, burning." Obito kept muttering these two words in his mouth, and then kept condensing the chakra in the palm of his hand before releasing it.

Soon the morning was about to pass, and Obito already felt that his two hands were numb from the cold, and the skin of his hands had become white and wrinkled due to the long contact with water.

"If you think about it, the river water tastes good." Obito regretted a little why he didn't promise Mu Yue a few hours ago to practice again.

The cultivation of this change in nature is simply more torturous than treading water.

"Don't cultivate yet, let's eat." Mu Yue stopped the three of them, and then took out three lunch boxes and handed them out to the three of them.

"Today's food is so delicious!" When Maitkai opened the lid, he smelled a fragrance that went straight to the soul, as well as the dazzling golden light in the lunch box.

"Teacher Mu Yue, something is wrong with this meal, it's actually glowing!" Maitkai was dumbfounded.

"The sun is reflective, so eat with confidence." Mu Yue smiled faintly.

Maitkai took a bite of the spoon, and his eyes instantly burst into light, and he waved the spoon extremely quickly and kept sending fried rice into his mouth.

"Delicious! Delicious! "Maitkai feels like I've never eaten such delicious food.

"Is Kai so tired from practicing today?" Daitu feels that Maitkai is a bit exaggerated, although Teacher Mu Yue is a good craft, but there is no need to eat in such a hurry.

"It does smell good." Obito changed his mind a little after opening the lunch box.

He's not an egg fried rice, but a home-cooked stir-fry.

Obito first took a little bit of vegetables, and then took a mouthful of rice and put it in his mouth.

"Delicious!" Obito's eyes widened, and he felt a taste that he had never felt before explode in his mouth.

Then it's a frenzy of grilling rice, stuffing the food into his mouth until Obito eats the chili pepper in the dish.

A terrifying spicy smell erupted, and in a trance, it was as if he had come to a volcanic crater that was about to erupt, and the air around him was hot and dry.