The two of them crossed the brook again, skirted the low hill, and came to the little forest with only twenty trees.

"Brother, today we will still cut down ten trees each, and see who can cut them faster. Nebula called.

"Okay, cut it quickly, or you'll lose. Xingyi replied with a smile.

"Not necessarily, I'm going to win today. Nebula said unconvinced, and began to swing the axe in his hand.

"Nebula, when cutting trees, combine the concept of Tai Chi. Star Shift reminded.

Rigidity is soft, softness is rigid, rigidity and softness are combined, it is for Taiji!

Swing it hard, slow down halfway, and then chop to the tree at a uniform speed, and then gently use the inertia of the arm to draw the axe backhand and throw it behind you, and then repeat the previous action, each time the axe will be cut to the same place, just soft and soft, soft with rigid, so as to speed up the cutting down of the tree

speed, but also to be able to unload part of the force of the anti-shock.

......

The two of them sat on the ground, panting slightly, surrounded by bare tree stumps.

"Brother, you're really right, with the help of the concept of Tai Chi, not only can you cut faster, but your arm is not so painful. Nebula said with a smile.

"I wouldn't have reminded you if I had known, but it's good that you're about to catch up with me. Xingyi quipped.

"What does it mean to catch up, obviously we are making the same progress, okay, I cut five, you also cut five, for the sake of your guidance, I deliberately did not exceed your goodness. Nebula said unashamedly.

The two of them cut down half of the tree in about two hours, and the first time they cut a tree, it took an hour, which shows that the speed has increased a lot.

After Xingyi and Nebula sat on the ground and rested for a while, they did not continue to cut down the tree, because it was already afternoon, and their stomachs were already growling, so they carried their axes and returned to the stream, washed their faces, and took out a basket of fruit from the wooden house.

"Brother, I want to eat meat, we've been eating wild fruits since we came here, and I'm tired of eating them. Nebula nibbled on the two wild fruits on his hands and said dissatisfied.

"It's good to eat some, but fortunately, the master prepared so many wild fruits for us in advance, otherwise we can't find food in this secret realm, and we can't get out, so we can only eat grasshoppers." Xingyi said with a smile.

"Grasshoppers are also meat, but you can't find grasshoppers here. Nebula smiled wryly.

"Eat, after eating, we have to cut down trees, and we should be able to cut them down before the sun goes down today. ”

After the wild fruit is satisfied, Starshift and Nebula go to the grove with their axes and start cutting down trees again.

An axe after an axe, each axe is cut in the same place, the two of them are more and more skilled in cutting trees, and the mastery of strength is becoming more and more ingenious, it seems to be like flowing water, but in fact the power should not be underestimated, every axe cut on the tree, will leave a shallow cut mark.

The sun continues to sink, and the sunlight changes from bright white at noon to golden yellow at dusk.

"Sure enough, it was done before dark, brother, I'm hungry again, are you hungry?" Xingyun touched his noisy belly and smiled awkwardly.

"The sun hasn't set yet, and today is really fast, so we can take these trees back with us on the ground, and we can have a good rest. Xingyi said with a smile.

After the two of them moved the trees to the hut one by one, they piled up two more piles of wood next to the two piles of wood from yesterday.

Outside the wooden house, only the stars twinkled from time to time in the quiet night sky, as if they were whispering something, and in the wooden house, the two teenagers slept very soundly, and seemed to have encountered something wonderful in their dreams.

The next day, just as yesterday, the twenty trees that had been cut down reappeared, and they were still flourishing.

Xingyi and Xingyun were armed with axes, and as they had done the previous two days, each with ten trees, each cutting down trees while pondering the mystery of Tai Chi.

On this day, Xingyi and Xingyun finished cutting down the twenty trees early, completed the task assigned by the master, and after the twenty trees were sorted out and moved to the wooden house, the sun was still shining in the air, and there was no appearance of setting the mountain.

"Brother, Shizun and Xiaoxiao will be out of the customs tomorrow morning, right?" Xingyun said, looking at the six piles of wood on the ground.

"That's right, it's almost an hour before the sun sets, we've completed the task anyway, let's go take a bath, cut down the tree for three days, and if we don't take a bath, we will smell all over our bodies." Xingyi said with a smile.

"Okay, the provincial master and Xiaoxiao will see us in embarrassment tomorrow. ”

The two walked along the stream next to the wooden house towards the waterfall, deliberately staying away from the wooden house, in case Xiaoxiao suddenly came out of the customs and was embarrassed.

The distance between the hut and the waterfall was not too far, and after walking some distance, they stopped, because there was a waterfall not far ahead.

The water flow of the waterfall is not urgent, but it is not appropriate to say that it is not urgent, and the silver-white water in front of it is like the old man's white beard, pouring down one after another, making a roaring sound, and in the breeze into the ears of Xingyi and Xingyun.

"Let's take a bath here, the waterfall in front of us is a forbidden place drawn by Lin Lao, we had better not get too close. Xingqi said as he looked at the waterfall in front of him.

The two of them took off their dirty clothes and couldn't see the original white clothes, and jumped into the stream with a cheerful smile.

The water in the creek is very clear, the water in the creek is not deep, only about half a person high, but the water in the creek is not calm, the stream has been flowing from the waterfall to the downstream, the sound of the murmuring water is endless, and the sun shines on the water of the stream near dusk, and the golden light shines......

"Wow, it's so comfortable~" Xingyun said with a look of enjoyment squinting his eyes.

Xingyi took a handful of water, splashed it on Xingyun, and said with a smile: "Little Flower Cat, wash your face quickly, look at your dirty face." ”

Xingyun was not convinced, and he also took a handful of water and splashed it on Xingyi and said, "Brother, you are the same, see me wash you too." ”

Speaking of which, the two are not yet 11 years old, they are very curious about everything, and they can play happily under any circumstances, which is the nature of children.

"Brother, let's compete to see who has been underwater for longer. ”

"Do you still need to compare, every time you compare this at home, you lose, you forget. Xingyi said with the corners of his mouth raised.

"I don't care, it's not at home, how do you know I can't win. Nebula said with a puffed face.

"Alright then, don't fool around!"

With that, the two of them plunged headlong into the stream, which calmed down, and after a while, Nebula burst out of the water, gasping for breath.

As soon as the nebula came out, Starshift followed closely and showed its head.

"Yes, I'll lose to you if I come out a little earlier. Xingyi scoffed.

"Don't count just now, come again!" Xingyun said unconvinced, his little face was red just now.

The two of them dived into the water again.

After a while, Xingyi leaked his head, took a breath, and saw that Xingyun had not yet come out, and he was a little worried, afraid that he would be in danger because of his stubbornness.

"Brother, I saw a small box at the bottom of the river. Nebula suddenly burst out of the water and called.

Xingyi breathed a sigh of relief and asked, "What box, did you take it out?"

"I'll come out first to change my breath, brother, you wait for me, and then I'll go down and dig it out. With that, Nebula dived into the water again.

It took a few more moments for Nebula to emerge from the water, holding a small black box the size of a palm.

"What the hell is this?" Starshift took the small box that Nebula had brought up, rummaging it up and down, looking at it constantly.

The small black box looks quaint and somewhat mysterious. The two wanted to open it, but helplessly found that the eight sides of this square box were the same, there was no place to open it at all, it was like a solid one, the two shook the box with their hands, but they couldn't hear any sound, which made them think that the box was solid, Xingyi wanted to throw it away, and Xingyun grabbed the box and didn't want to throw it away.

The two of them fought in the stream for a while, and as it gradually darkened, Starshift and Nebula went ashore to change into clean clothes, and they walked together towards the wooden house.

After eating a few wild fruits, the two brothers lay on the grass behind the wooden house, resting their heads on their arms and looking up at the starry sky.

The two of them lay down comfortably like this, and suddenly Xingyun said, "Brother, do you want to know how those twenty trees grew back?"

"What the hell did you come up with? Xingyi said flatly, but he was really curious in his heart.

"Let's go, let's squat in the woods tonight and see. Nebula said, standing up.

"Let's go!" Xingyi also stood up.

The two of them walked through the starry sky, crossed the stream, skirted the low mountain, and came to the woods.

Under the moonlight, the green mist became thicker and thicker, and the two of them stayed for a while and saw that in the green mist, those bare tree stumps began to quickly pull out new branches, and these branches were rapidly growing and growing......

In less than an hour, the stumps grew into thick trunks, and then slowly became leafy.

Suddenly, something in Nebula's pocket flew out of its own pocket, wrapped in a cloud of green, floating in the air.

This thing was the small black box that Nebula had picked up, and in the green mist, the small black box suddenly broke, and then only an equally dark key was left in the mist.

Xingyi and Xingyun both opened their mouths in surprise, never knowing that there was a key hidden in the black box that they thought was solid.

The key circled back and forth in the air a few times under the green wrap, and then floated slowly in one direction.

"Brother, let's follow and see where it goes. Nebula said excitedly.

Then the two of them followed behind the key, following the green cloud in one direction.

After walking a distance, the two found that the key was actually floating towards the waterfall, and after a while, the two came to the waterfall, and the waterfall was forbidden by Lin Lao for some reason.

When the key came to the waterfall, it immediately emitted a dazzling light, and saw that the water on the waterfall was on both sides, and a cave appeared in the middle, and then the key fell and was held by Nebula in his hand.

"Brother, can you get in?" Xingyun asked.

"Let's go inside. After thinking about it for a while, Xingyi couldn't help but be curious.

After entering the cave, the two of them had not gone far before they found a stone door blocking them, and there was a keyhole in the stone door.

Nebula carefully inserted the black key in his hand into the keyhole......