Chen Yu's whole heart was cold after hearing Nana's words, the S-level upgrade to double S can only rely on epiphany, isn't this a cheat! If you read novels and TV series, you can know that it is completely dependent on chance, how can you say that you can realize it. Now the system has only given him half a year, if he doesn't realize it in the past six months, then won't he just hang up? The main quest of the system is really not easy to complete.

When he first saw this main quest, he was still thinking that he could use his points to upgrade his fire-based ability to A-level first. Then use the two free opportunities given by the system to increase the level of the ability at the end of the last main quest and this quest to upgrade the fire ability to double S level. Now it seems that his hopes have been dashed.

Now he had to first upgrade his fire ability to S and then try to have an epiphany to upgrade his fire ability to double S if he could. Thinking of this, he clicked on the ability zone and looked at it. The fire ability is still the lowest D level, and it takes 4,000 experience to upgrade to C level. Chen Yu didn't hesitate to spend forty points and directly upgraded the fire-type ability to C-level, and after upgrading to C-level, he took a look.

It takes 16,000 experience to upgrade this fire-based ability from C-level to B-level, which is 6,000 more experience than when you upgraded Enchantment to B-level before. But no matter how much experience he needs to level up, he still has to level up. So he spent another 160 points to upgrade his C-level fire ability to B-level. After upgrading the fire ability to B, he took a second look, and by this time the experience required to upgrade the fire ability had become 250,000. Looking at the large string of zeros behind twenty-five, Chen Yu smiled bitterly, two hundred and fifty thousand experience is equivalent to 2,500 points.

He now has 458 points left, which is not even a fraction of the points needed to level up. Luckily, he still had two free upgrades, and he was glad he hadn't used the free upgrades he had when he completed his first mission. Otherwise, he wouldn't even be able to upgrade his fire ability to S right now, let alone upgrade it to Double S.

Chen Yu clicked on the option to upgrade his fire ability again, and this time the system told him that he didn't have enough points to level up, and asked him if he would use the opportunity to upgrade his ability level for free. Chen Yu clicked OK, and the fire ability was upgraded to A-level. After upgrading to A-rank, Chen Yu saw that it would take 500,000 astronomical experience to upgrade to S-rank, so he immediately used the last chance to upgrade his fire-type ability to S-rank.

After upgrading it to S-Rank, he began to look at the introduction to S-Rank fire-based abilities. I saw that the ability description reads:

Ability - Fire Control: Can control the fire elemental around the host for your own use. The current level is S, which can control the fire element within a one-kilometer radius around the host. The flame temperature can reach up to 1000 degrees Celsius, and the mental power consumed per second varies with the temperature of the flame. The minimum cost is 500 spirit power per second, and the maximum cost is 1000 spirit power per second.

Chen Yu was very hurt when he saw this introduction, after the fire ability was upgraded to S-level, the power was indeed significantly enhanced compared to D-level. The current fire ability can be used without a fire source, and it is still a fire elemental that controls the fire element within a kilometer of him. This means that as long as he's not in the ocean, the Medium Fire ability can be used. Even in the vast ocean, although there is water all around, the fire element should still have a little bit, probably that is, the power will be a little poor, and it can still be used.

And the power of this ability has also become stronger, and the previous D-level ability description didn't say how many degrees the temperature of the fire was. But according to his guess, the D-class flame is only about 100 degrees at most. And now after the S class, this temperature has increased significantly, up to 1000 degrees, and more importantly, he can also control the temperature of the flame. Unfortunately, while the power of the ability has increased, so much more mental power it consumes. The minimum is 500, and the maximum is 1000.

He checked his spiritual power, and after the upgrade of the fire ability just now, the system rewarded him with 2,000 spiritual power, plus the previous 3,000 spiritual power, and now his spiritual power has reached 5,000 points. But those 5,000 points alone would allow him to use his fire-based ability for 9 seconds, which would be 4 seconds if he turned the fire-based ability to its maximum temperature. Because he couldn't use all of his mental power, he had to leave a little bit left, so he had less time to use his ability by one second.

Even though S-Tier fire-based abilities are powerful right now, they don't have much use for real combat. How can any battle be over in 4 to 9 seconds? At present, the most important thing for him to do is to improve his mental power as soon as possible. Otherwise, he has a powerful ability, and it's just a matter of seeing. He still has a question now, the ability description says that the consumption of mental power changes with the temperature of the flame, and he has to try the relationship between this temperature and the consumption of mental power now.

So he turned on the ability directly, stretched out his hand, looked at it, and thought that a 100-degree flame would appear. As soon as he finished thinking about it, a flame appeared in the palm of his hand, and at the same time, he felt the temperature around him rise instantly. Chen Yu could clearly feel that the temperature of this flame was 100 degrees, which was a very wonderful feeling. At the same time, he also saw that his mental power was decreasing at a rate of 500 per second.

Seeing the drastic decrease in spiritual power, he didn't have time to observe this flame, and immediately silently raised the temperature of the flame in his heart. The flame in his palm kept rising in temperature as he thought. 200,300,400,500 degrees, the consumption of mental power does not change with the rise of temperature, and has been consuming at a rate of 500 points per second. It wasn't until the temperature of the flame in his hand reached 600 degrees that his mental power consumption became 600 points per second. Later, when the temperature rises to 700 degrees, the cost of mental power becomes 700 points.

Then he didn't try, because his mental power at this time was only more than 1,000, so in order not to let the mental power be consumed, he stopped the experiment. When he turned off his ability, he felt a burning smell coming from his body, and when he looked down, he realized that his clothes were a little burnt because of the heat. Seeing that his clothes were like this, Chen Yu was also taken aback.

But in a blink of an eye, he figured out that maybe because the flames were released by himself, he didn't feel the heat of the flames, and he wouldn't be hurt by the flames. However, just because he is not affected by the heat of the flame does not mean that something else is not affected by the heat of the flame. So his clothes were directly scorched, but fortunately, because the flames did not last long enough and the temperature was not high enough, his clothes did not burn, otherwise he would have suffered. Looks like he's going to have to buy a set of heat-resistant clothes in the future, and he doesn't want to burn his clothes when he runs out of abilities.