After chatting for two or three hours in a row, Jiang Chuan not only explained in detail why people can't fly like birds, but also helped Bai Yunzi briefly popularize what is called the digestive system and respiratory and circulatory system, and finally gave him a suggestion to make fixed-wing wings.

The more Bai Yunzi listened, the more excited he became, scratching his ears and cheeks, overjoyed, quite some Sun Monkeys comprehended the transparent appearance when listening to the sermon of Su Bodhi Ancestor in Lingtai Fangcun Mountain.

If it weren't for Bai Jinxiu's distress for Jiang Chuan, he came in and urged him several times, Bai Yunzi looked at the posture and planned to pull Jiang Chuan to continue to discuss the research work of flying machines, and if it wasn't good, he would even go on the road of Leonardo da Vinci.

"You kid, yes, really good." Bai Yunzi looked at the drawings of fixed-wing wings that Jiang Chuan drew for himself, and looked at Jiang Chuan with his beard, smiling all over his face, the more he looked at it, the happier he became.

"I just know a little bit about it, old man, you don't have to praise me like that." Jiang Chuan saw that he was reckless, so he let go, and said with a smile.

"Don't learn from those sour Confucians, don't be modest, know is know, don't know is not know. The old man originally thought that you were just a reckless man who could fight and kill, but he didn't expect that he still knew this. I have lived for more than 100 years, old man, and it is not easy for me to meet a young man who knows how to learn things. ”

Bai Yunzi sighed again and again, stared at Jiang Chuan again, and suddenly said: "You kid, you can fight, you can rule the world, and you know how to learn things, you are more powerful than my old man, and you are not like people in this world." ”

Jiang Chuan chuckled in his heart, not sure if the old man really saw something or said it casually, but he still smiled calmly on his face: "You can't compare me with the old man, I liked to think about it when I was a child, so I knew a little bit about it." It's you, astronomy and geography, arithmetic of the Five Classics, construction and water conservancy, weapon forging, furniture carving, omnipotent, and a generation of martial arts masters, people outside say that you are a living immortal in the sky, so you can understand so much alone. ”

Bai Yunzi no longer asked, but shook his head and said: "What kind of living immortal am I, it's just that I have lived a little longer in this life, and I want to learn any craft I encounter and give it a try." If you live for a long time, these will come naturally, and there is nothing strange about it. ”

Speaking of this, he sighed again and said: "The more I know, the more I know, the more I feel that the mystery of this world is endless, the more I feel that manpower is sometimes poor, and the more I feel ignorant and insignificant." ”

"The so-called ignorant are fearless, and the more they understand this world, the more they will be in awe of this heaven, earth and universe." Jiang Chuan nodded.

Bai Yunzi's eyes lit up and said: "That's right, the ignorant are fearless, and it's very right." The heavens and the earth are vast, the world is chaotic, and if people do not have a sense of reverence, they will definitely harm others and themselves. ”

Jiang Chuan looked at him as if he had something to say, and if he had a deep meaning, his eyes flashed and he didn't answer again.

Bai Jinxiu came in and saw an old man and a young man chatting speculatively, and he was happy in his heart, urging the two to go out to eat.

The food outside had been heated several times, and it was hot again.

Although it is April and May, the mountains are cool and refreshing. Everyone sat on a stone table in the courtyard and set out their meals to eat together.

Jiang Chuan took a closer look, those meals were all peasant meals, baked cakes and steamed buns, all kinds of game, wild vegetables, etc., all of which were coarse porcelain bowls, and the style was very simple.

However, Jiang Chuan has always been not particular about eating, and he eats delicious food, and he still eats coarse tea and light rice.

For him, the first function of food is to satisfy his stomach, and eating full is the most important thing, so he doesn't twist it, and starts eating when he picks up the rice bowl.

Bai Yunzi also held a large black coarse porcelain bowl, looked at Jiang Chuan, and saw that his expression was naturally not contrived, nodded secretly, and began to bury his head in eating.

An old man and a small man have a big porcelain bowl in their hands, while pulling the bowl of rice, while eating the game and wild vegetables on the table, casually chatting about their own experiences, the south and the north, the sky and the earth, throughout the ages, where do you want to be.

One has lived for hundreds of years and is well-informed. A man of two lives, well-read and knowledgeable, chatting very pleasantly.

Although Jiang Chuan deliberately avoided talking about some topics that were too shocking, what he said also made Bai Jinxiu and Ji Biao, who were eating together, yearn for it.

Bai Yunzi was also secretly surprised in his heart, and asked frequently.

Although he is not as knowledgeable as Jiang Chuan, after all, he is an old man, and many times Jiang Chuan casually mentions it, he can see the core point of the problem and ask random questions.

Jiang Chuan knows a lot of things, and how to answer them can only be diverted from other topics.

This meal lasted for two hours, and by the time everyone finished eating and some disciples came to clean up the dishes and chopsticks, it was already in the middle of the day.

The mountains are silent, there are all kinds of birds, beasts and insects in the distance, and the Baiyun Sect is also quiet, and occasionally the sound of dogs barking sounds, which is even more dark and quiet.

Bai Jinxiu had already arranged a room for Jiang Chuan and Ji Biao, but it was actually a courtyard next door to the small courtyard where she lived.

Although the yard is small and simple, it is neat and clean, which makes people feel peaceful when they live in it.

Back in his room, after Jiang Chuan looked at the book he was carrying with him for a while, he listened carefully, Ji Biao in the next room was already snoring, smiled slightly, put down the book and walked out of the room.

Standing in the courtyard for a while, hearing the howling of wolves in the dense forests in the mountains, mixed with the howls of other fierce beasts from time to time, Jiang Chuan's thoughts were scattered, and he thought of many things for a while.

In particular, the experiences of the past two years flashed in his mind like movie shots, which made him feel like a dream.

The night is lonely, the mountain breeze is quiet, and the feeling that people can't help but feel that they are slowly quieting down, and the red dust outside the mountain can't help but leave behind them, and only quiet joy is left in their hearts.

He walked out of the courtyard and walked along the stone path outside the door, winding his way up to a platform.

The mountain wind here is much stronger, and there is a faint whistling sound. He took a closer look but he was on the top of a mountain behind the White Cloud Sect at this time, and below the top of the mountain was a steep abyss, bottomless.

"I didn't want to walk around, but I came here. But since you're here, it's better to blow the wind here. As a human being in two lives, I have never had the experience of blowing the wind on the top of the mountain without sleeping in the middle of the night, and today is one more experience. ”

Jiang Chuan secretly said in his heart, raised his eyes, but saw that there was a boulder in the middle of the platform on the top of the mountain, and on the boulder at this time there was a figure sitting upright, with white clothes fluttering, clothes flying, and the person did not move at all, as if he was an independent immortal.

Jiang Chuan was surprised, and when he was thinking about whether to go over and have a look, the man in white shouted: "Since the kid is here, why don't you come and speak." ”

That person is naturally Bai Yunzi.

Jiang Chuan was stunned for a moment, stepped forward, walked to the side of the boulder, and said with a smile: "The predecessor is really interested, did you come out to bask in the moonlight?" ”

Bai Yunzi smiled: "The kid speaks interestingly. When there is no wind or rain, the old man comes here every night to meditate. During the day, everything is chaotic, and only in the middle of the night can you look inside here, reflect on what you say and do during the day, and see if there are any words and actions that go against your original intention. ”

Jiang Chuan was solemn and respected, and said: "Most people in the world are lenient with themselves, strict with others, always complaining about things in trouble, rare people who introspect every day, and the predecessors introspect every day, and do not forget the original intention, which is really admirable." ”

Bai Yunzi patted the stone next to him and motioned for Jiang Chuan to sit up.

Jiang Chuan didn't twist either, his body was vertical, and he sat cross-legged next to Bai Yunzi.