Wang Wei immediately started telling Huang Dian about how to organize a proper civilization, in order to do so he used his almost photographic memory to remember what they were taught in schools in his previous life.
Wang Wei wanted to use every single advantage given to him, so he had no scruples about stealing the knowledge of his previous civilization. So the first thing he told the Huang Dian to do was to learn how to build houses from wood, thatch, and mud.
What Wang Wei learned in his previous life was that settling down was the first step of creating civilization, and now he proceeded to the second step which was teaching him how to plant nutritional vegetables.
When Huang Dian relayed what Wang Wei told him to the tribe they were shocked that he was teaching them the way to grow plants they used to forage from the forest and they thought that Wang Wei gifted them the ability of the gods, the ability to create life itself.
They were even more amazed when Wang Wei explained the concept of domestication to Huan Dian and told him the tribe would even be able to control the beasts they were currently being terrorized by.
The method of domestication that Wang Wei described to them is to domesticate an animal by picking the most obedient and gentle ones from every generation and breeding them together to create the next generation and killing the rest and using them as a food source.
That way in only a few generations the animals would be domesticated and depending on the animal could even be ridden.
After explaining all of this to Huang Dian and Wang Wei had to make sure he properly organized the tribe into different jobs in order to implement all of this into the new society, which took an entire year to fully put everything into motion.
While everything was being implemented into this new society with the protection of Wang Wei not a single human in the tribe died of a demonic beast attack and the tribesmen's lives improved drastically.
Now they didn't die from demonic beast attacks, they had protection from the elements because of their new houses, and they were even fully fed with Wang Wei's knowledge of agriculture and with him hunting demonic beasts for them.
So the status of Wang Wei in the hearts of the entire tribe was unshakable, and even if Wang Wei told them to commit suicide they would do so without hesitation.
However, as Wang Wei's status in the tribe rose drastically so did Huang Dian's and since Huang Dian was a normal human he used that status to position himself as something of a tribe chief, he even fully controlled how the food was divided up in the tribe.
But Wang Wei didn't worry about that, after all, it would be easier to implement new things in the society if he controlled the leader of said society.
After spending an entire year helping them enter the era of permanent settlements there were two more things he had to do before he entered seclusion to create the first realm of his cultivation path.
Firstly as he did not know how long his seclusion would take it was very important to give the tribespeople the ability to protect themselves while he was gone.
The way he thought to do that was by giving them the physical cultivation system, he instructed them the various herbs needed to create the various medicinal baths required to cultivate their bodies and thought them how to make said medicinal baths from the herbs.
The tribesmen were ecstatic when Huang Dian expectedly cultivated to the skin-strengthening realm and successfully destroyed a tree with a punch. The only way he was able to do it so quickly was that he was given priority in all of the medical herbs of the whole tribe, because of Wang Wei.
What Wang Wei didn't expect to happen was that Huang Dian was even happier than all of them combined and he immediately ordered the tribespeople to construct a temple in Wang Wei's honor which they were more than happy to do.
Wang Wei was a bit taken aback but ultimately he did nothing to stop it if they wanted to honor him they were free to do so after all he didn't force them so he didn't get any negative karma.
And the second thing Wang Wei had to do was share the Buddhist teachings from his previous life and he presented them as the teachings that Heaven instructed him to relay to them.
But what he truly hoped for is that he might gain something from the insights their civilization would hopefully gain during his long secluded meditation.
So after a long time spent he finally had to say goodbye to the tribespeople and he told them he has to return to Heaven and that he will return when Heaven demands it. After that, he quickly ran towards the mountains far away from the newly constructed village, but to the mortal eyes of the tribespeople it looked like he vanished into thin air, even Huang Dian barely saw him leave.
However, in order to enter a long secluded meditation, he has to first eat an enormous amount of food and store it in his blood as he still hasn't reached the realm required to completely survive on Qi without the need for food.
Therefore all the demonic beasts were terrorized in the next few days as he hunted and ate almost every demonic beast in a 1000 kilometer radius.
When he checked how much food he stored in his blood he found out that it was almost at the limit of what he could store which was truly a monstrous amount, by his estimation he could survive without food and water for 2 centuries.
This was very abnormal because usually, cultivators in the Blood-Exchange realm would only be able to store a century worth of food at a maximum but he could store twice of that, he guessed that it was because of his "Art of Boiling Seas" technique that tempered his physique even more than normal.
Now Wang Wei started thinking about the location he could have his secluded mediation in and eventually he landed on a lake. Because of his enhanced lungs being able to breathe even in water, he would be able to seclude himself at the bottom of the deep lake where no human could find him.
So with that thought he eventually found a lake and sat in a lotus position on the bottom of it as he entered a deep meditative state.