Five minutes have passed this time, and several great sages still have not come up with an answer, and they are still working hard to derive the formula of gravity.

An old man said with some reluctance: "Young man, how did you come up with such a question? I always feel that it is not difficult, but it is the lack of a very important thing that I can't push it out." I wonder if if I have to figure out the geographical range where this mink is located first, and then there are some different differences between different geographical regions?"

"The difference in falling speed?" Mo Ling frowned lightly and said, "There seems to be some kind of constant law between them, but we can't deduce it for the time being, I'm afraid it will take a while to study it carefully." ”

"This is also someone else's research and creation, in fact, the formula itself is very concise......" Yuling was about to speak.

"Stop, stop, don't say it, we'll have to figure it out ourselves!" an old man hurriedly interrupted.

Some people even sighed with emotion: "Can you tell us who came up with this constant formula? If only we could meet him." ”

"He's gone......"

Even if he's still here, you won't see him.

One person lamented: "It's a pity, the lifespan of your human race is too short, if you can survive for five or six hundred years, you will definitely make more contributions." ”

Nian Yubai cautiously leaned up and said, "That...... So did we pass?"

"We're talking, and we've passed, but don't be in a hurry, if there are any interesting questions, just say them all. An old man who looked like a madman hurriedly spoke.

"It's really gone...... Yuling felt so tired for the first time asking other people's questions.

The old man persevered, "How can it be gone?

"Yes, Xiaoyou, we're so bored here, you'd better tell us everything you know, even if it's for us to find something to do. ”

"Little friend, I don't mind if you stay here and discuss problems with us every day?"

But I don't mind......

Yuling found herself completely surrounded.

"How do you get out of the tower...... Yuling reluctantly interjected.

"You can go up to the sixth floor from the stairs over there, and there is a formation on the sixth floor that directly teleports to the bottom. ”

As soon as Mo Ling said a word, a great sage waved his hand and said, "It doesn't matter, Xiaoyou, think carefully about whether you have missed some interesting research......

Interesting research has gone to the sea, but the problem is that I don't know it myself!

Yu Ling gave Nian Yubai a look, and hurriedly said, "There is such a paradox...... A native prophet of Crete said that all Cretans are liars, gluttonous and lazy, so are his words true or false?"

Taking advantage of the fact that the great sages were in a daze, Yu Ling hurriedly broke away from the encirclement and rushed to the stairs with Nian Yubai as fast as possible.

When Mo Ling and the others came to their senses, where was there still a few of them?

"This kid actually set up a special trap to wrap us in, and then run away by himself. An old man shook his head with a smile.

"But I really can't figure out this trick, if that person is lying, then 'he's lying' is a lie, so he is telling the truth, but if this is the truth, he is lying, and in the end there is no answer at all. Another great sage smiled bitterly.

"The young Terran people are really interesting now, and I hope to see him again in the future. Mo Ling sighed softly.

"Come on, let's not dwell on this paradox, it's more interesting to derive the above formula. ”

......

"Whew, it's dangerous, it's dangerous. At the staircase on the sixth floor, Nian Yubai wiped a cold sweat and said.

The end of the winter whispered: "It should be said that it is obviously Brother Yu who is so dangerous, right?"

Nian Yu raised his eyebrows narrowly and said, "Ah Ling, surrounded by a group of great sages, do you feel particularly proud and proud?"

"Proud ghost. "Yu Ling doesn't have a good airway.

It's obviously like walking on thin ice, who made him have such a little ink in his stomach.

"Wow, look, there are so many books here!" exclaimed at the end of winter.

The two turned their heads to look, only to see that the sixth floor tower was full of neat rows of bookshelves, on which rows of ancient books were stacked in different categories, and there was a vicissitudes of life and the ancient fragrance of books, which made people unconsciously brush away the irritability and become clear and quiet.

To tell the truth, Yu Ling is much more intimate with this kind of thread-bound book than with the commonly used jade.

"Can you take it......" Nian Yu looked at it with white eyes, and suddenly he had a collector's habit.

"No, you can look through or engrave it, but you can't damage or take away the books here. A voice rang out out of nowhere.

"Are you?" Nian Yubai's eyes widened.

"I'm the tower. "It sounded like a man or a woman, or even a young man, but it was as pleasant as a bubbling spring.

"Are you actually conscious?" Nian Yubai felt like an idiot after asking.

The tower spirit-like being replied, "If you want to leave, leave through this teleportation array in the middle." ”

"Thank you. Nian Yubai hurriedly remedied.

"You're welcome, Terran friends, the fact that you have been here is a testament to your wisdom. The Yago has always had a close relationship with the Terrans, so the books here are all in the Terran language. "Taling is gentle and authentic.

Nian Yubai and Dongmo looked at each other, so embarrassed that they didn't dare to speak. If it weren't all for Yuling, they would have been brushed off the first layer, okay?

Yu Ling didn't feel complacent in the slightest, anyway, he was just a shameless porter, and the crystallization of other people's wisdom could not be counted as his credit.

A few people walked along the bookshelf one by one, although they really wanted to engrave each book in the jade slip, but after all, this place gathered the achievements of countless people of the Yago tribe for countless years, so if you want to engrave them one by one, it is not known that it can only be completed in the Year of the Monkey.

After Yu Ling picked up the hundreds of books he was interested in, he suddenly saw two unknown Yago characters written on the bookshelf next to him, but fortunately, it was written in the ancient language of the human race below: formation.

"Yu Bai, it's your fifteenth birthday the day after tomorrow, and these are my birthday gifts for you?" Yu Ling asked as a light knock on the bookshelf.

Nian Yubai rolled his eyes and said, "Ah Ling, you're too ready-made, right?"

Without waiting for Yu Ling to speak, someone couldn't help but smile and said, "But if it weren't for you, I wouldn't be able to come here." Ah, so many formation books, it's not too happy!"

Three days later, Yu Ling left the Holy Tower with tens of thousands of engraved ancient books of various types such as history and geography, which he weighed after carefully selecting many times, of course, the main reason was that the capacity of his blank jade slips was not enough, not enough!

Yu Ling roughly calculated, a piece of jade is simple and cannot hold about a million words of information, so this rhythm is ...... He engraved at least a few hundred million words.

Even if he cultivated his soul power and had a powerful ability that he would never forget, he ...... Did he really see all these things in his lifetime......

Not long after leaving the Holy Tower, several people met Enrica on the road.

This time, Nian Yubai was finally able to say with confidence: "We have been walking around the sixth floor for two days, if you don't have any doubts, we are going to pack up and leave with the end of winter?"