After returning to the school, Xuan Yuanfeng asked Dugu Changyun to go to the secret book by himself, because several younger brothers and sisters did not reach the Starlight Realm and still needed to teach the foundation, not that the understanding was not good, it was really playful and could not practice seriously, and Dugu Changyun already had the secret book, and he needed time to understand it himself.

"Cultivation lies in comprehending the power of heaven and earth, comprehending the power of the elements between heaven and earth for one's own use, and condensing different spells for combat through special methods" "Water is soft by nature, but it can be turned into indestructible ice, so it cannot be confused by appearances, practice is to experience the variables in the depths of the elements, and the same spells are different in different ways to perceive different results." Cultivation refers to the continuous growth of the spiritual root conceived in the dantian to store the power of the elements for fighting, and the continuous growth of the spiritual power conceived in the heavenly spirit to control the power of the elements" "The growth of the spiritual root determines the level of cultivation and the amount of elemental power, and the growth of spiritual power determines the performance and power of spells, both of which are indispensable"......

Dugu Changyun was immersed in the world of the book, and in only half a month, he had mastered the four introductory techniques, and the practice puppet in front of the "Water Bondage" sprayed out several water columns under his feet, instantly wrapping the puppet, and the water column kept the puppet firmly bound. After dispersing the water column, he used a cold arrow, and the small arrow that was longer than the length condensed and shot out in an instant, but because of the lack of mental power, he fell in front of the puppet a hundred meters away and did not hit, but Dugu Changyun was also more satisfied, and after a period of practice, the ice arrow would be bigger, faster and farther. Using the water device in turn, the water queen feels dizzy, the spiritual power is consumed, and the elemental power in the body is also consumed, and then sit cross-legged to practice, close the eyes and restore the spiritual power, and then the spiritual power manipulates the elemental power between heaven and earth into the dantian to condense and store, and the spiritual root is like mushrooms after experiencing the nourishment of the elemental power, and the cycle is practice.

Duguhai looked at the children who worked hard to cultivate, his face was full of sadness, they were all good seedlings of difficulty, and his future achievements would not be below him, but the news of the alien race was like a mountain pressing on his head, and he didn't know if there would be a future.

These days, the Four Emperors met frequently, mobilized all forces, increased defense efforts in all cities, recruited scattered monks from all over the world at all costs, and only said to the outside world to prevent the invasion of wild beasts, and the entire human race was from a sense of crisis that the mountains and rains were about to come.

Time passed like this, in a blink of an eye, Dugu Changyun was already sixteen years old, and he was already proficient in four secret techniques, the water binding could summon four water dragons as thick as a water tank, the cold arrow could condense ten large arrows with the thickness of an arm at a time, and penetrate the iron puppet three hundred meters away, the water weapon could condense the cold ice knife that sharpened the iron like mud for combat, and the water emperor could also block the impact of a hundred catties of boulders, and the spiritual root also condensed into a drop of water after a long period of watering, becoming a materialized spiritual root, surrounded by azure water elements, all of which were stored in the body's elemental power, and the strength was already a real moon realm monk。 Today's Dugu Changyun has become an adult, no longer a little bit of the past, has become a handsome young man of 1.8 meters, every gesture has a kind of ethereal and ethereal temperament, the luxurious prince robe is to set off a luxurious temperament, today is a coming-of-age ceremony, Dugu Changyun arrived at the sacrificial platform very early, and the scattered people of the hundred sects of the imperial dynasty plus the idle clouds and wild cranes came to congratulate.

On the sacrificial platform, the sacrificial text announced by the ceremonial officer, Dugu Hai crowned Dugu Changyun, and brought the crown prince for the first time, from today onwards, it is officially called the prince, the sacrificial platform is surrounded by a sea of people, either the emperor's relatives or the world's famous grandmasters, all looked at the center of the audience Dugu Changyun sighed deeply, a few years ago the testing ceremony, most of the people were present, looking at the young man in the field, who failed to enter the door that year, these people's eyes are very vicious, they can see that Dugu Changyun's cultivation is his own step by step, without using any genius treasure, the foundation is very solid, and he will be able to soar into the sky over time。

The coronation ceremony came to an end, according to the usual practice is still to worship the ancestors, at this time the mutation suddenly appeared, according to the palace not far away, above the 10,000-meter altitude was still empty, now it is like a mirror cracked, behind the cracked sky is connected to a black hole, revealing a red black, strange light, a piercing strange cry full of killing intent continues to come. At this time, Duguhai mentally understood that something big had happened.