If he succeeds, he will achieve the greatest achievement.

Noah, who was struggling, was thinking back on how to obtain a advancement star core, which he desperately needed now to advance to silver rank, but he never heard the Guild Master or Elder Wen tell him how to obtain it. Perhaps that was what they meant by judging and deciding for himself.

Just when Noah was at a loss for words, the system's voice sounded again, "Sensing that the host has reached the full five-star bronze level, please select the upgrade options for the host. First option, search for advancement star mine to advance, second option, use high quality core to advance." Hearing this, Noah also inquired, "Which advancement option is more valuable or beneficial." The system then unexpectedly replied, "Successful advancement by breaking through alone without using any external forces. This will allow the subsequent realms as well as one's own potential to be maximised." This sentence couldn't help but remind Noah of some sort of experiment in his previous life, which was whether or not a ghost hunter could advance successfully without being allowed to use the advancement star core to advance. But in the end, none of the people in the lab survived, and the results of the experiment were too inhumane, causing the world government to directly announce the cessation of the experiment.

Noah planned to try this way to advance to the Silver rank. His goal was to head to a location where the mana value was unusually thick. According to the news published in his previous life, ghost hunters had a chance to advance when their mana value reached its limit, which would allow them to advance without using a advancement star core. But there was only a chance because all the experimenters within the experiment couldn't withstand the pressure and blew themselves up.

It wasn't that Noah didn't value his life, but he had to get every chance he could to become stronger. The system told him it could benefit the subsequent realms, which he didn't understand, but he wanted to try. He didn't want to be as obscure as he was in his previous life, and he didn't want to worry his parents and sister anymore. So he had to succeed, that was the thought in his mind! If he succeeds, he will achieve the greatest achievement.

He couldn't care less, he had to find a place with an extremely high concentration of mana value to advance first. He ran with all his might, his speed was extremely fast, and the Guildmaster in the sky as well as Elder Wen were shocked by Noah's sudden move. The Guildmaster looked at the running Noah and said, ''I've never seen him so serious and heartfelt. He doesn't want to be looking for ghosts." Elder Wen also responded, "That's right, he seems to be trying to find something, perhaps a advancement star core. We don't tell him either just to let him know for himself that it's a unique ore, the one-eyed leader just now had one."

Back on Noah's side, of course he knew that the One-Eyed Chief's gem just now was a advancement star core, but he didn't need it anymore. At the moment, he was using the system's own sensing to find locations with the highest concentration of mana. The ghosts and monsters wherever he passed, as long as they were weak were killed by Noah with a single sword strike, and those that couldn't be killed with a single sword strike were spared. He was in a hurry now and didn't want to waste too much.

In the end, he locked onto a location with the highest concentration of mana. It was right on the high mountain in front of him. There was also a Ghost Monster corresponding to a three-star Silver Rank living there. But Noah didn't want to procrastinate either, as he directly rushed into the high mountain, and his move also startled the ghost monster. It was huge, with a height of three metres, it was the Giant.

Noah had just entered the mountain and used the Double Absorption Card and cast Full Power to absorb the mana around him. Noah was frowning in confusion, although the concentration of mana in this place was higher than other places, it was not so high as to make it the place with the highest concentration of mana. However, Noah was still thinking of the mindset of occupying the place and decided to kill the giant first.

He didn't intend to stall for time and directly used his full strength to perform Ground Shattering. A cold stabbing sensation grew inside the giant. It didn't dare to fight hard and dodged Noah's blow. The pile of boulders behind it was shattered. But Noah also just faintly said, "Already know how to dodge? Then how should you dodge this strike." He used his speed to instantly move behind the giant at a speed close to instantaneous movement to fully perform crouching Dragon. Although the giant had already dodged at first, he was still struck by the blow. A bloody hole was also added to his abdomen.

Afterwards, he also slumped down unwillingly. Noah looked at the fallen giant and ignored it, walking straight into the cave that the system prompted.The Guildmaster in the sky also noticed at once after carefully checking the motion caused by Noah. It turned out that the ultimate culprit of the several nightly mana reductions that had occurred this week was Noah. Although he didn't know how he caused it, he was still very surprised that he was able to absorb such a huge amount of mana at once. He then told Elder Wen beside him about it as well. Elder Wen laughed out loud after hearing about it. He looked at the Guildmaster and said, "It seems that we don't know much about this little guy, so let's hope that he can grow up as soon as possible."

After Noah entered the cave, he clearly noticed the increase in mana value, but the cave seemed to be very deep as well. Noah also asked the system if it was safe, and after receiving an affirmation from the system, Noah walked straight into the deeper depths of the cave.