A legion burst out at the beginning of the super card system

After settling Yiyi and Quefeng, Chu Mu started to leave the world of the third yuanqi circle and return to the earth in the fourth yuanqi circle world.

But before returning to Earth, Chu Mu wanted to promote himself to the gold level combat power.

Hard work pays off, Chu Mu found some high-level vitality crystal nuclei in the storage space of the insect heart, these things are not like vitality cards, there is no limit.

So Chu Mu borrowed the power of the vitality spar to enhance his combat power.

It took a day for Chu Mu to raise the evolution level from Silver Nine Stars to Silver Ten Stars, which is already the pinnacle of Silver Rank combat power.

But to break through the shackles of the Silver Ten Stars, Chu Mu had to work harder.

After spending another three days, Chu Mu broke through the shackles of the ten silver stars and successfully promoted to one gold star.

So far, Chu Mu has become a real master, even if he encounters people in the world of the second vitality circle, he will be respected.

Because the threshold for entering the world of the second vitality circle is to have a gold-level combat power to enter.

Chu Mu, who had reached the gold-level combat power, found the barrier leading to the world of the fourth vitality circle, and then used the soul-killing knife to break the barrier of vitality.

"Earth, I'm back!"

When Chu Mu passed the vitality barrier and returned to the earth in the fourth vitality circle world, he found that it was still an island, but it was not Hawaii.

It seems that the end points of the two vitality worlds going back and forth through the vitality barrier are different, which is the so-called randomness.

Chu Mu didn't know where he was, but he was a man of great knowledge and memorization. Apart from playing games, he also knew a lot of miscellaneous studies and small skills in life.

For example, if Chu Mu wants to know where he is now, he must first know his location, latitude and longitude.

And Chu Mu mastered a method that roughly calculates latitude and longitude, and that is the sun shadow observation method.

In fact, this sun shadow observation method was taught in the fifth grade course of Huaxia Primary School, but most people will forget it as they grow older.

In order to use the sun shadow observation method, Chu Mu began to prepare measurement tools. First, he found a branch and inserted it into the ground.

Then I found an old pocket watch in the storage space of the insect heart, which should be a relic left by a certain chosen person.

This pocket watch is very interesting. In addition to being used as a timepiece, it also has a lot of spiritual energy. It must be a rare spiritual treasure. It's just that Chu Mu's probing skills are sealed, so he can't detect information.

In addition to an ancient pocket watch, there is also a strange ruler. The scales on this ruler are the inches and feet of the Chinese civilization. There are three feet in total, which is one meter when converted to the length of the earth.

The important thing is that the material of this ruler is not gold, iron, or wood. It is made of a relatively rare object. It is a bit like ebony, but it is not ebony. It is very heavy to buy. Apart from measuring length, it must have other uses .

The bamboo pole, ruler and watch are all there, and then we are waiting for the sunrise and sunset of the next day.

From the morning, insert a bamboo pole vertically in an open field, and record the time at this time and the position of the shadow point at the end of the pole shadow.

So far, record at intervals until the afternoon. At this time, it should be found that the recorded pole shadow on the ground is a parabola-like curve with two sides long from the center of the bamboo pole and a short distance from the center of the bamboo pole to the center of the earth.

First, Chu Mu used Beijing time to calculate, and soon Chu Mu roughly calculated the latitude and longitude of the island.