Suddenly several hedgehogs rolled around the white circle! Several people quickly retreated...

"It looks like it's really them!" Wen Xueyan looked at the hedgehogs who refused to give in at all!

Zuo Moyan broke off a dead branch and threw it into the white circle. Unexpectedly, it was knocked away by the hedgehog!

They roll their backs full of thorns around the white circles... to prevent anyone from snatching things in the circles!

Now several people are worried! This hedgehog has obviously been artificially trained and is invulnerable and will stay where it is! How can they make it leave?

*******Scene change**********************************************

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"Open the letter and take a look!" Ye Zi hoped to Han Xi'er. They had already seen the dilapidated wooden door!

"Well, okay." Han Xi'er opened the second letter and looked at the content on the letter. She was stunned for three seconds...

"What's wrong?" The others came over to take a look.

[Congratulations, you successfully opened the second letter! You saw a wooden door, but the key to this wooden door was under the bright circle! The circle was divided into several pieces, and there were only 10 numbers on it!

You need to crack this digital code! This is very simple! You only have five minutes to think! There is a key under the last irregular shape! I look forward to your perfect performance!]

With a staggering sound, the edge of the bed hit the stone wall, and the rumbling sound of the engine stopped.

"Be careful!" The two boys grabbed the swaying bodies of the two girls, and they quickly grabbed their arms.

Gong Yihao and Han Shuoye were the first to step ashore. In this dark cave, only these numbers were shining...

Gong Yihao and Han Shuoye handed their hands to the two girls one after another, and then helped them move forward...

This game seems to have overlooked a very key thing! The IQs of the four of them are very high!

This little trick is not difficult for them!

"Irregular shapes..." Han Xi'er watched the circle being cut into irregular shapes one after another, squatting down and thinking...

Ye Zixi looked at these graphics up and down, "A big circle is divided..." she murmured.

Han Shuo frowned at night and thought without thinking: "The shining patterns seem to be very regular..." Among the 10 numbers, only a few numbers did not light up very frequently!

"There are only ten numbers from 1 to 10! The password must be among these ten numbers!" Gong Yihao kept turning around the circle and said thoughtfully.

Suddenly, a glimmer of light flashed in the eyes of all four people present!

The four people chanted in unison: "Pi!"

"What are the first ten digits of pi?" Han Xi'er raised her lips and smiled slightly. She already had the answer!

Ye Zixi murmured: "3.141592654!"

[Hee hee, those of you who have never studied pi are confused by this chapter? Hehe... It doesn't matter, it doesn't affect your reading! You will learn it when you are in sixth grade or seventh grade! School is about to start.
Chapter completed!