When Han Zi returned to the courtyard, he saw a plaque appear above the gate of the courtyard, which was engraved with three golden characters of "Little Ziju".

"Young master, you're back. ”

At this time, Xiaolian opened the courtyard door just in time to see Han Zi staring at the plaque.

"Hmm. ”

Han Zi smiled at Xiaolian and nodded.

After returning to the bedroom, I saw that Xiaomeng and Xiaohuang were not in the room, and I didn't know where to go crazy.

Han Zi asked Xiaolian to prepare some hot water, she wanted to take a bath, ready to relax, everything that had happened in the past few days still felt like a dream.

After taking a bath, Han Zi changed into a light yellow dress with a jewel skirt, which was a set of third-order defensive magic robes that could resist the full force of the late stage of foundation building.

After dressing up carefully, Han Zi instructed Xiaolian to find the two crazy Xiaomeng and Xiaohuang who didn't know where to go.

Because she has an important thing to do now, that is, to prepare to refine uranium ore, because refining uranium ore is a huge project, with Han Zi's current strength alone, it can't be done, so she needs the help of Xiao Meng and Xiao Huang.

The demonic power of Xiao Meng's ice attribute and the natal demon fire of the little yellow ninth-order demon beast can just achieve mutual assistance when refining uranium ore.

When the two beasts were found by Xiaolian, as soon as they entered the room, they saw Han Zi who had changed into a light yellow dress with a jewel skirt, and the two beasts were stunned.

It turns out that my sister can become so beautiful, the indescribable expensive temperament emanating from her, as well as her elegant and vulgar, has a light and spiritual aura, delicate skin, leisurely demeanor, beautiful eyes, peach cheeks with a smile, without spitting out, breath like a quiet orchid, indescribably gentle and lovely.

Xiao Meng and Xiao Huang flew into Han Zi's arms, and the other ran to Han Zi's side, especially Xiao Meng No matter what Han Zi said, she was tired of being in Han Zi's arms and refused to come down, although they were both mothers, but she Xiao Meng was willing to stay in her sister's soft arms.

watched Xiaomeng lying in his arms very happily, with a doting smile on his face, and a word came out of his mouth.

"Enter. ”

Han Zi hugged Xiaomeng and appeared in the Zhihai space with Xiaohuang in her arms.

Coming to the newly built research room in the space, Han Zi quickly took out ten pieces of uranium ore and put them into a special sealed melter.

Refining uranium ore requires a centrifuge specifically for refining, but Han Zi has not yet been able to develop centrifuge technology.

Therefore, she had to use the simple and traditional method of refining, and she asked her uncle to make six completely sealed melters out of ironstone.

Ironstone is a high-grade refining material with good hardness and texture, and Han Zi believes that ironstone can withstand the high-temperature energy generated when refining uranium ore, so Han Zi chose ironstone when choosing the material for making melters.

After putting the uranium ore into the six melters, Han Zi mobilized the gray mist in the sea space to cooperate with his own aura and input it into the melter, while Xiao Huang's role was to cooperate with Han Zi to refine half of the uranium ore, while Xiao Meng was responsible for cooling the high temperature generated during refining uranium ore when refining uranium ore.

Due to the refining of uranium ore, the uranium content is low, the impurity content is high, and the corrosiveness is extremely strong and radioactive, where the refining and refining details of uranium ore are more complicated, Han Zi has to carry out it personally, because once there is a mistake, the consequences are not something she dares to imagine, I saw Han Zi changing the refining form many times, intermittently carrying out the cycle of uranium compounds for enrichment and purification.

"Xiaomeng cools!"

"Xiao Huang increases the input of demonic energy!"

Han Zi kept commanding.

After three days of careful refining, about ten grams of enriched uranium with a purity of about one degree or so were finally extracted from the uranium ore.

After three days of uninterrupted spiritual energy input, Han Zi was a little tired, while Xiao Huang didn't matter, because the output of this bit of demonic power was just a piece of cake for it.

And Xiaomeng is okay, except for a few rumbling stomachs, it's nothing.

This scene made Han Zi smile bitterly.

Looking at the two beasts in front of him, Han Zi decided to treat them well.

Then Han Zi carefully made a spiritual material feast in the kitchen of the space, and the one that the two beasts ate was called a fragrant one.

After a day's rest and recovery, Han Zi finally returned to his peak state, directing the two beasts to devote themselves to refining uranium ore again.

When Han Zi and the two beasts were seriously refining uranium ore in the sea space.

During this period, Zhao Yuanchun came once, and after being told by Xiaolian that Han Zi was in retreat, he was very happy, his niece was really diligent, but don't be too tired, cultivation is the same as life, it must be carried out steadily and happily.

When Zhao Yuanchun left, he asked Xiaolian to tell Han Zi that he left after going to find him when he left the customs.

After a month and a half of super-strength refining, Han Zi and Xiao Huang extracted a total of about 50 catties of uranium, and enriched uranium with a purity of about 10 degrees.

During this period, after repeated refining, Xiao Meng and Xiao Huang gradually became proficient in the refining steps, and now that Han Zi is not there, they can also refine uranium ore on their own.

After refining the uranium ore to a purity of ten degrees, the energy in the uranium can be used to generate electricity, and Han Zi is ready to build a nuclear energy reactor after completing the trial of the Secret Heart Realm, and initially complete the nuclear power generation.

After calculating the time, there were still about ten days before the opening of the Dark Heart Secret Realm, and Han Zi left the space after explaining that Xiao Meng and Xiao Huang continued to refine some enriched uranium.

Back in the room, Han Zi opened the door and saw Xiaolian, who was cutting flowers and plants in the courtyard, put down the scissors and walked towards her.

Xiaolian walked to Han Zi with a gentle step, and said with respect on her face: "Young Master, after the City Lord asked you to leave the customs, immediately go to his residence to find him. ”

Han Zi looked at Xiaolian in front of her, she had a good impression, her flexible and flexible personality made Han Zi very agreeable, this girl has a single personality, she doesn't like to talk much, and she is very serious about doing things, which makes Han Zi have a sense of cultivating her in her heart.

Now Xiaolian is only ten years old, cultivating to the third level of Qi cultivation, when she was seven years old, her parents died in an accident, she was young and ignorant and sold to the slave house by traffickers, and after several tosses, she became a low-level maid in the city lord's mansion.

Originally, when Han Zi settled in the City Lord's Mansion, he didn't plan to configure a maid, but his uncle of the City Lord insisted on accompanying her a maid, originally there were two, but under Han Zi's strong request, only one was left, which is the current Xiaolian.

Han Zi is very sympathetic to Xiaolian's life experience like herself, but she is much stronger than Xiaolian, because she also has an uncle, and Xiaolian has no close relatives, so Han Zi has never felt sorry for her.

Xiaolian also has a good impression of this young master, because she knows that as long as the other maids are a little bit out of line with the master's wishes, they will bear the huge anger from the master, and the maids who are not favored by the master will sometimes be deliberately made difficult by some housekeepers, and if they are lucky, they will not die, but also take off a layer of skin, this is the sorrow of their low-level maids, and her current master has never felt sorry for her, but has taken care of her a little, which makes her very moved.

Since Han Zi had an idea in her heart, she didn't change, she looked at Xiaolian in front of her and nodded seriously.

I saw her say in a serious tone: "Xiaolian, at this time, two bottles of Huiling Pill and one bottle of Luck Pill, you don't have to do these tedious tasks in the future, I don't care about this, your most important job now is to raise your cultivation, do you hear clearly." ”

Hearing Han Zi's serious words, Xiaolian was surprised on the spot, and shouted with a trembling voice of excitement: "Young master, this..." ”

Before Xiaolian finished speaking, she heard Han Zi's serious tone sound again: "This is the task I gave you, I hope you don't let me down." ”

After Han Zi finished speaking, she looked at Xiaolian who was a little overwhelmed, and thought in her heart: "I hope Xiaolian will not be ashamed of her expectations of her, how far she can go, it depends on her creation, if she is really a dou who can't be helped, she will give her up without recklessness, because she doesn't need the weak, let alone sympathize with the weak." ”

Looking at Han Zi's departing back, Xiaolian's eyes were already hazy with tears, she knew the meaning of Han Zi's words, only to see a look of determination suddenly appear in her teary eyes, and at this moment she had already decided on an idea in her heart.