Returning to the vicinity of the cave, Ling Tian felt the defensive barrier. After being bombarded by the two of them for five or six days, it was finally about to open. They were happy, and Ling Tian was even happier.

"I'll probably be able to break through in the next day or two. I'm really looking forward to it. I didn't expect to be the one who got it right, haha!"

Ignoring the two free laborers, Ling Tian entered the space again. As soon as he entered, the spirit in the medicine cauldron started to mutter resentfully like an unsatisfied woman.

"You're such a scoundrel, little brat! I never said I wouldn't sign a contract with you. You're so stingy and don't have the heart of a man. How are you going to achieve great things in the future?"

Ling Tian was stunned by this barrage of questions, and it took him a while to react. Then, he felt delighted and said calmly, "So, you're willing to sign a contract with me?"

"Humph, you're asking questions even though you already know the answer. Complete the ritual quickly and let me out."

"good!"

Ling Tian excitedly walked over to the medicine cauldron, opened its lid, and immediately activated the Eternal Life Contract technique. After everything was ready, he shouted, "Alright, quickly split a wisp of your soul out."

The spirit of the weapon obviously struggled for a while, but finally sighed helplessly.

“Ah~”

After a heart-wrenching cry, the weapon spirit split out a wisp of soul in great pain and sent it out. Ling Tian didn't think much about it. While activating the Eternal Life Contract, he continuously sent out his spiritual thoughts until he completely enveloped the weapon spirit's soul, and then slowly took it into his mind.

Immediately afterwards, Ling Tian sat cross-legged and made a strange hand seal with his hands. A golden light mark surged around his body and then quickly sank into his mind.

After a few breaths, the spirit of the weapon in Ling Tian's mind had a complicated mark, shining with golden light, binding him like a cage.

Ling Tian felt it and could clearly tell what the spirit of the weapon was thinking at the moment. It was so magical, and he felt that he could destroy it with just a flick of his hand.

"Okay, the contract is done. How about I call you Yao Lao from now on?"

"Yao Lao Mo! That's quite fitting."

Seeing that the weapon spirit had no objection, Ling Tian said, "Master Yao, I am just a beginner who has just entered the immortal sect. I will rely on your guidance in the future."

Ling Tian kept a low profile and did not use his master's identity as a threat. He understood the principle that an old man in the family is like a treasure. The spirit of the weapon was an old monster who had lived for who knows how long. If he could get his wholehearted assistance, he would surely be able to carve out a piece of his own in the path of immortality.

Ling Tian's respectful and humble attitude really pleased him, and it was obvious that Yao Lao was very satisfied.

"Although your talent is poor, with my assistance and this space, I think it's possible for you to break through the void and ascend to heaven."

Yao Lao stroked his beard, looking confident.

"Thank you, Master Yao. Regarding cultivation, do you have any good suggestions? I have no idea what to do."

"You are quite astute."

Ling Tian smiled awkwardly and waited for Yao Boss's reply.

"Give me a day. I need to think carefully. Also, if I want to refine the elixir, I need you to provide me with spiritual power. Otherwise, I won't be able to refine it with my limited soul power."

"Okay, but how do I do that?"

"It's very simple. Just introduce some of it into the medicine cauldron while you practice. However, according to your current speed of absorbing spiritual energy, I can only refine one or two furnaces of Qi Refining Stage pills at most."

"I see. I wonder if the spiritual energy generated by the space can be provided to you for use."

Yao Lao was very tempted, because by absorbing the spiritual energy inside, the number of pills he could refine every day would increase several times. This would speed up the improvement of Ling Tian's realm a lot, and he could also use the remaining part to nourish himself and thus prolong his life.

However, this would affect the development speed of Ling Tian's internal space, which was his only hope of achieving the Dao realm. If the speed slowed down, he would never be able to wait for the day when he could achieve the golden body and transcend the medicine cauldron.

After weighing the pros and cons, Yao Lao decisively gave up doing this.

"No, although the laws of your space are perfect, it lacks the Heart of Space. It is far from the level of producing endless spiritual energy. It only relies on the essence of the sun and the moon absorbed by your body to produce a little. Continue to store it. Once it reaches a certain level, the space will bring you unexpected benefits."

"So that's how it is? I thought it was all thanks to those spiritual plants, Yao Lao, I have a question."

"you say!"

"According to you, the spiritual energy that the space absorbs through my body every day is not much. I think this little spiritual energy is not enough, not to mention so many spiritual plants. Don't they also need to absorb the spiritual energy of heaven and earth to grow? Although the flow rate is four times, why do the growth rate of the spiritual plants inside also reach four times as high?" Ling Tian asked in great confusion.

"Haha, you're quite perceptive for noticing this problem so quickly. This is because your space has existed for a long time and has absorbed the essence of the sun and the moon over the years. The spiritual energy inside is actually very terrifying, but it will self-regulate the spiritual energy to supply the growth of all the spiritual plants in the space. The more spiritual plants there are, the more spiritual energy the space itself consumes.

Although your spatial spiritual energy is extremely formidable, if you continue to spend more than you earn, it will be depleted. Therefore, the most urgent task is to improve your realm. The first step is to find the heart of space and integrate it into the space. If you can find it, you will be able to generate spiritual energy continuously."