Ye Cheng found a cave on an uninhabited desert island in the Arctic Ocean and hid and prepared to break through the retreat, on this deserted island in the north where birds don't and the ice and snow, Ye Cheng didn't need to pay too much attention to the outside world, and directly sealed the cave with a boulder, which was definitely a quiet and excellent retreat place.

Ye Cheng first dealt with the dragon qi and dragon soul energy that he had eaten some time ago, and after spending a few days dealing with the most chaotic section of dragon qi, he was ready to hit the stellar level.

The biggest difference between the stellar level and the planetary level is that the stellar level is already self-sufficient, can swim around the entire galaxy, and can move freely around the galaxy as long as there is the illumination of the stars to supplement the cosmic energy, which can be regarded as a real cosmic free man.

Therefore, the key to breaking through to the stellar level is to cultivate a star core that can absorb energy through stellar light, and as soon as the star core is formed, it can operate automatically, and it can achieve a certain degree of self-sufficiency when the stellar light shines with a certain intensity, and it can physically cross the various planets in the galaxy.

Depending on the exercises, there are many star cores that Ye Cheng can choose to condense. There are Psychic Cores, Blood Cores, Planet Will Cores, and Nuclear Cores.

After Ye Cheng's consideration, he finally chose to use nuclear energy to condense into a nuclear energy star core, after all, nuclear energy is too widely used in the universe, and there is a relatively large space for development, Ye Cheng believes that the nuclear energy star core is the best one among all his choices.

After choosing the path of breakthrough, Ye Cheng converted part of the spiritual power, blood energy, dragon qi energy, and dragon soul power that was about to overflow into nuclear energy through the dragon yuan transformation, and stored it for the next breakthrough.

Under the five-in-one energy reserve, Ye Cheng hit the bottleneck of the stellar star for ten days in a row, and finally on the tenth day, a soybean-sized nuclear energy star core was formed in Ye Cheng's sea of consciousness, and under the continuous supply of nuclear energy, this miniature star core slowly became larger, from the thickness of the finger to the thickness of the walnut, and finally stopped growing in the size of a tennis ball.

Ye Cheng has finally advanced to the stellar level, under the action of the nuclear energy star core, Ye Cheng can completely get rid of the gravitational effect of the blue star, if it is not for the air resistance, Ye Cheng's speed in the planet can also be close to the speed of light. Under the action of the star core, Ye Cheng can also get rid of the influence of the sun's sixty percent gravity, and out of outer space, Ye Cheng's speed can easily surpass all the flying machines of Blue Star even if it doesn't need too much energy to push, reaching an astonishing fifty percent of the speed of light. If you push it with energy, it can reach almost 90% of the speed of light under long-term acceleration.

At such a speed, with the strong body of the stellar level, Ye Cheng does not need to consume any energy, and directly impacting a planet from space can trigger the power of an asteroid impact, completely exterminating ninety percent of the creatures living on the surface of the planet, and truly achieving the level of one person destroying the star.

After breaking through to the stellar level, Ye Cheng did not rush out of the level, but continued to retreat to stabilize the realm, one day, two days, a month, two months, time passed imperceptibly in Ye Cheng. The higher the rank, the weaker the concept of time. Only then did Ye Cheng understand the meaning of being in the cave for only a few months, and it had been a thousand years in the world.

Half a year later, Ye Cheng had not yet exited the cave in the uninhabited desert island in the Arctic Ocean, and when Ye Cheng was meditating and retreating, what he didn't know was that in Neptune, at the edge of the solar system, a galaxy-level extinction-type natural disaster was quietly being bred.

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Neptune, an ice-covered planet, has an atmosphere dominated by hydrogen and helium, as well as trace amounts of methane, and the ice has the strongest wind in the solar system, with wind speeds of up to 2100 km/h. Its cloud top has a temperature of -218 °C, one of the coldest regions of the solar system, while the core has a temperature of about 7,000 °C, making it a veritable ice planet.

This is a typical place of extinction in human impressions, but 8,000 meters below Neptune's thick and huge ice continent, a cosmic creature that can scare and panic those who know it is slowly waking up.

This is a cosmic Zerg brood that wandered from the universe millions of years ago, wandered in the universe for too long, fell into a deep sleep because of energy exhaustion, and finally crashed into this icy planet, the brood was not injured under the protection of the tough shell, and directly crashed into the vicinity of Neptune's core.

With the passage of time, the deep pit that this Zerg nest hit out was also covered with ice and snow again. And the Zerg Brood also slowly woke up by slowly absorbing the heat emitted by Neptune's core, and finally, on this day, the Zerg Brood completely absorbed enough energy, and now she is ready to break out of the nest, leave this frozen planet where birds don't, and find a living planet to carry out her mission and expand the Zerg's sphere of influence.

Under the search of the spiritual power of the brood stellar star Great Perfection, she soon discovered that there happened to be a life planet in this galaxy that she had in mind.

However, the Zerg brood is a creature that is not good at fighting, but the mental power is strong, and the physical aspect is only the strength of the later stage of the planet because all the energy is used in the reproductive organs, and the flight speed of all the broods is only one-tenth of the speed of light, and it will take a little time to fly from Neptune to the blue star. But no matter how slow it is, if it's fast, it's 10 days, and the slowest month is almost there, and you have to slow down when you have to avoid some obstacles.

Therefore, this cosmic natural disaster crisis will erupt in a month at the latest, and Ye Cheng is still in retreat on an uninhabited desert island in the Arctic Ocean where birds don't, and he doesn't know anything about it.

If Ye Cheng has not been out of the customs before the Zerg Brood enters the Blue Star, and is defenseless against this, a week after the Zerg Brood enters the Blue Star, the Zerg Warriors born will be able to reach millions, and they will not be threatened by Ye Cheng, and they will be tens of millions in three weeks, and even if they enter the Asian realm of Ye Cheng, it will be enough to protect themselves, and in three months, Ye Cheng will be beaten by more than 100 million Zerg warriors even if he is in the field, and he will be consumed alive.

Now it's really time is life, the sooner Ye Cheng goes out, the faster the time to find the Zerg brood, the safer Blue Star and Ye Cheng will be, once Ye Cheng retreats again for more than four months, then when he goes out again, the entire Blue Star will basically be the world of the Zerg, at that time he has no choice but to escape from Blue Star, this is a race against time.

20 days have passed, Ye Cheng is still unaware of this life and death crisis, and the Zerg Brood is not far from the Blue Star, and it is conservatively estimated that in three days, this cosmic natural disaster will be able to completely enter the Blue Star.