YaoYan was sweating as if he was sitting near lava although his eyes we're closed, one can clearly tell he was in pain, absorbing and refining the souls was not easy as it sounds it's much more difficult and painful process then one can even imagine . YaoYan face was twisted due to pain, if he had knew this would happen he would have never tried to refine souls no he would have never even tried to absorb it.
If refining and absorbing souls would been so easy then the soul clan would have already become the strongest clan and becoming dou di would not have been a dream.
The reason why soul Hall was not able to refine Yao Lao soul even after he was captured and tortured for so long was mainly because of Yao Laos will power or you can think of it as his soul power.
The reason why soul Hall was hunting him was also because the temptation of dou zun powerhouse and plus an alchemist, a double bonus his soul power would have comparable to the dou Sheng powerhouse just imagine if you could absorb such a strong soul power what would happen.
The temptation was just too great to give it up. Once someone reach dou zong level ordinary methods are no longer useful . Why do you think in the original Yun Shan surrender to soul Hall was he a foul or did he not know their methods although northern continent is not very strong and doesn't even deserve to know soul Hall.
However the top powerhouses more or less have heard about the soul Hall and their methods plus Yun lan sect is not just for show they have existed for thousands of years their foundation is not so shallow .
Yun Shan make things difficult for xiao yan was also because of soul Hall the wanted the jade piece in xiao clan hands and once xiao yan was captured it would have been easier for them to exchange his life for the jade piece or they can just simply torture him.
Considering their methods they would just have tortured him . So Yun Shan had no choice other then to make a deal with soul Hall in order to increase his strength or he would have died. He had tried everything in order to reach the level of dou zong. He was at the peak of dou haung but still couldn't cross the single step in order to reach dou zong.
Everyone's not like the protagonist who has cheats or get opportunities whenever they go out or attend the auction the found extreme treasures. And Yun Shan was also stuck like everyone else his lifespan was at its end and no ones willingly wants to die specially those who have power, and he just needed a single pill a zong breaking pill, now here comes the importance of alchemist the pill he wants is a 6th tier pill only can be refined by a 6th level alchemist which he couldn't find after all alchemist are not so common plus a 6th level alchemist in whole northern continent they were hard to find and even you find one then what about the materials which were more hard to fine then it also depends if the alchemist is willing to refine it for you and there are high chances to fail refining such a high level pill the materials are already hard to find not to mention their high sky prices.
Simply put he doesn't have the time to do all that and even if he gets the pill it also depends on the quality of the pill . Now just imagine if he even able to get a flawless quality can he really break through dou zong because there is still a chance of failure . Now one would think that even after all these things if Yun Shan was not able to break through then he is simply just incompetent.
No he is not this is just how difficult it is to break through dou Huang to dou zong this is how hard the cultivation is it needs resources which have high price not to mention the higher you go the harder it gets many people die just being a dou shi their entire life. Not to mention how hard is it to even enter the cultivation world.
Well this is just how hard the cultivation is if you exclude the anomaly name protagonist for them everything is easy after all they are being feed with luck himself.
Yao Yan who always thought that why soul Hall was never able to refine Yao Lao even when he was tortured and kept so long in soul Hall now he understand why it's not because why don't want to it's because they simply can't until they break the will of Yao Lao completely no one can forcefully absorb or refine the soul of someone that easily.
He had made the biggest mistake and now he is going to pay for it now he understand even if the soul power was just dou shi he can't just simply refine them if it was only one he could have done it but there are dozens of them now and they have lost consciousness the souls are now like a complete madness state and trying to eat his consciousness , just when he thought he was going to be devoured, a sudden roar of a dragondragon echoed.