Ryuk sat in lotus position. He knew the general procedure, but not the specifics of body cultivation. So Ryuk simply wouldnt follow the conventional way as he did not know it. He would make his own way.
He muttered "Opening the pores is the 1st stage. Then widening the meridians the second. Clearing the marrow third stage. Opening the acupoints is fourth. Fifth to tenth is about cycling the qi through your body violently and repairing it. Once you are able to do 100 cycles you have reached tenth stage. Then its the four primary organs the Heart, lung, eyes and spleen. Then the final stage is unification of the new body. Okay now lets see how I can modify it to become perfection. According to Physician Bai we have two sets of meridians one is our physical ones and the other are the roots of our soul which act as Meridians aswell. This was proven by Taoist Mohammed who had his meridians irreversibly crippled. Taoist Mohammed knew that something had to keep our soul attached to our body and he was right it was a set of Meridians which were called soul roots. By using soul energy he was able to fight against his enemies. Physician Bai was very interested in this and sent a theory if there can be two sets of Meridians why can there not be three? The third set would be made entirely out of qi this made it so without having to body temper one could have efficient qi flow, furthermore they would advance with a rise in cultivation. The theory was quickly disproved as after Taoist Mohammed no one had been able to use soul roots to fight. The theory behind this was that meridians are like real roots only after removing one can another occupy the space although this was inconclusive as it was near impossible to survive after losing your meridians, but I feel its strange isn't the soul in another plane how can it not be present in the same place as the meridians. My thought is that the Meridians are given life by our soul roots. For example the heart beats because of an unconscious reflex so Meridians similarily do that yet to get a proper direction and movement they need the soul to help guide it. Why? what's the difference between the heart and meridians? Qi! external qi dosent belong to us only through incorporating it in our dantian can it belong to us. Yet how are we supposed to connect the qi to our dantian if it dosent belong to us? Our soul slightly controls the qi to flow in a direction for the body. So you just need your soul to connect and control tbe meridians in any form. Yet shouldn't that be very taxing on the body and soul? Yes! Yes... yes... ugh! Damn you! If I had one of those mental techniques to split my soul it would be so easy! Fine I'll leave it for later, but what do I do now... If I shift the formula in one part I need to make adjustments in the others. I thought by enhancing all the parts I could be fine, but just like that im stuck. Clearing the marrow should be fine its just purifying the blood. Using my fire law and water law it should be enough to purify it and increase blood flow increasing efficiency. Opening acupoints. The qi enters the acupoint space and like water and dye the qi becomes colored in the essence is of the acupoint, then the qi must be either by a medium/catalyst or purity of qi extract the latent potential like the pigment in plants. Soon the acupoint will be reborn and it shall demand its qi to show its dominance. 361 meridians exist throughout the body. Some increase lifespan, some cultivation efficiency and sensitivity, some simply increase the connection between organs. Acupoints can only be opened carefully and only a certain can be opened per realm if we overreach its likely the strain and excess potential will cause us at least to become disabled and worse die. I have already opened 4 with my four pole technique. I should be able to open 20 more. Compared to the 14 normal people can open with my bloodlines and state of existence I should be capable of handling 24 open. The cycle of vicious qi to temper my body I Actually have to do much less the purity and variety of qi types in my dantian would kill me if I did alot, but before I start I should gain the recognition of the other laws in my soul and form dantian palaces. The organs are the scariest part they are the most sensitive and even for powerhouses and races extremely compatible with body tempering it has an extremely high casualty rate. I'll need to study for a million or more years all the medicine documents I read. I can't and wont go into that process without full confidence. Uh so much work. I have to focus on the sword, the bow, body tempering, the natural law, those bloodlines in me, death threats from incomparable beings, body tempering, My laws... Ah I wonder where my simple life twisted."
Ryuk studied the laws for a long time using infinite thoughts and soon a sword like tower, black and white tower, a overlord tower combining to form a 9 towers conjoined to a almighty green tower. Then Ryuk asked Nothingness whether he had a soul splitting technique to which he got no response. Ryuk began to get focused and took out various resources he had stockpiled from his master and from various secret robberies he had done. Ryuk ate the pills Mongoose had left him at that time and began. He shot out qi from his dantian. These qi strands were like slim threads and like worms they came out from various spots around Ryuk. Ryuk felt a comfortable feeling wash over him as a wave of qi entered his body. Ryuk then tried breathing through his pores and air travelled in. Ryuk had an ugly expression and said "Ugh! That feels nasty wait how does this even work? Ah right it connects to the blood. ok... ok!" Ryuk could feel his body subconsciously drag qi and air in and the repeated process of breathing became more of a habit rather than a need. Soon Ryuk performed Meridian expansion he just continued until he felt his Meridians would tear. Soon they expanded by 25 micrometers. Ryuk felt his qi cycles flowing extremely clearly and it just felt refreshing he made an oath to get a soul splitting technique or multi thought technique.