In this post-apocalyptic world, I unexpectedly became a star galaxy master.

After changing into my pajamas, I sat on the soft, silky bed, turned the air conditioner up high, and the heat and irritation brought on by the high temperature soothed my mood.

Hongtang held a heat source stone and an ice source stone in her hands.

From the outside, these two energy stones are indistinguishable. They are both black minerals, matte, very hard, impossible to split with a hammer, about the size of a walnut, irregularly shaped, and each piece is a complete crystal.

However, the heat source stone feels warm to the touch, while the ice source stone feels slightly cool.

Okay, it looks a bit like coal, but not black. You might mistake it for something else if you don't look closely.

Heating stoves and cooling stoves look basically the same. The difference lies in the stove lid; one has a flame symbol, and the other has a snowflake symbol.

The oven is spherical, about 15cm in diameter, roughly the size of a six-inch cake. The lid is about the size of a passion fruit, big enough to hold two eggs. On the lid is a slightly raised black cylinder, which is the power switch; behind it is a sliding knob for adjusting the temperature from low to high. In front of the power switch is a flame/snowflake symbol.

The oven lid can be opened by rotating it, revealing a can-shaped space that can hold approximately four eggs. A knob with a hole in the center of the lid allows for easy hanging with a rope or chain.

After pressing the power button, the spherical bottom of the furnace changes to a flat bottom, making it easier to place on a horizontal object.

The stove's outer wall is smooth and undecorated, somewhat resembling a bronze product. Its color is a neutral, unremarkable hue. It looks a bit like a coconut shell.

Hongtang placed the ice source stone into the cooling furnace, turned it on, and went to the living room to test its effectiveness.

With the temperature set to the lowest setting, a noticeable drop in temperature was felt in the living room after 2 minutes, and the temperature stabilized after 5 minutes. The thermometer showed 10°C.

The temperature was so low that Hongtang was shivering from the cold. No wonder she felt like she was in an ice cellar.

Then turn the temperature slider to the maximum. After five minutes, the temperature stabilizes and the thermometer displays 30°C.

The cooling furnace itself did not change during use, and the ice source stone did not emit any smoke or odor. Hongtang was very satisfied and decided to try it out for one night.

That means 10 Ice Source Stones are worth 1 Plane Coins, averaging 1000 Plane Coins per stone.

Too expensive, it hurts my wallet!

As for the heater, we can only try it again when the temperature drops.

Back in the bedroom, after replacing the air conditioner with a cooling furnace, Hongtang began adjusting the prices of fruits on the interdimensional trading system.

"Sister, adjust the price of strawberries to 9 per box, and set it at 3 RMB. Other fruits will be sold individually, ranging from 1 to 5 RMB depending on size. Large fruits like watermelons will be 1 million RMB each. For the same type of fruit, you can also price it according to size and quality, with a maximum difference of 5000 RMB. Please draft the specific price and let me know for confirmation."

[Ok, host. 】

"By the way, little sister. What's the difference between a high-tech plane and an interstellar plane? From your previous introduction, it seems that our higher-level interstellar plane also has very advanced technology."

There is a difference, the difference lies in their level of scientific and technological expertise; they are basically all research fanatics. To give an analogy, if we are a kindergarten, then they are at least PhDs.

Hongtang, “…” After a PhD, there are postdoctoral fellows and academicians.

Okay, that's a really big difference.

However, their plane also has its disadvantages compared to ours. The most serious is the scarcity of resources; they certainly don't have as much delicious food as our host planet. Another issue is the coldness of human relationships. They mostly live alone, have few friends, and there's a lack of trust between people.

Resource shortage? Then let's sell things to West Hill at a lower price from now on.

Indifference? Perhaps it's the way things are done in a high-tech world. I don't understand it, but I respect it.

"Their technology is so advanced, I can buy some weapons from Cissir."

[The host can leave a message for Xixier to ask for advice, or she can recommend friends to you. The system has a 'friend recommendation' function.]

This little feature is really great.

"Okay, then you can send the message for me."

After assigning tasks to her younger sister, Hongtang began reviewing recent events, checking for anything she might have overlooked. Suddenly, she remembered she hadn't yet called the traditional Chinese medicine merchant.

I glanced at my phone; it was almost 10:00 PM. This was a bit of a disturbance to the other person's rest.

Forget it, never mind. I'll just make the call first.

After I identified myself, the other person immediately said, "I've finally been waiting for your call."

The current Chinese medicine market is chaotic and rife with irregularities. The quality of medicines varies greatly, causing the public to gradually lose confidence in Chinese medicine, resulting in a decline in orders and many Chinese medicine merchants being unable to sustain their businesses. Mr. Zhao is one of those who has suffered greatly from this.

I was thrilled and excited to hear from Huang Bin that a major client wanted to order seedlings and medicines. But I never expected to wait almost a month for that call. Finally, today it arrived.

Hongtang didn't say much, but simply gave Mr. Zhao a long list of medicinal herb seedlings. She had found this list online: 1000 common Chinese medicinal herbs, 200 precious medicinal seedlings, and 100 other non-plant-based Chinese medicinal herbs.

Mr. Zhao was quite surprised that Hongtang wanted so many medicinal seedlings. When he learned that she wanted to open her own Chinese medicinal herb garden, he kindly tried to dissuade her. However, Hongtang wouldn't listen to his advice, so he had to give her some professional and pertinent suggestions. In the end, the list of medicinal herbs increased to 2000 kinds, with 10 seedlings of each kind, and the total price was less than 100 million yuan.

Hongtang was surprised that the medicinal herb seedlings were so cheap, so she added dozens more kinds of traditional Chinese medicine preparations, bringing the total to 100 million.

To retain this major client, Mr. Zhao also gifted him some seeds of common Chinese medicinal herbs and dozens of books related to Chinese medicine. He explained that although the quantity of these seedlings was not large, they were quite varied and would require 5-6 days to prepare. Moreover, they would be shipped in batches, approximately 4-5 times, taking about 15 days in total.

Hongtang has no problem with that. She only has 70 yuan right now, and with her salary this month and the bonus from the Beishan villa, she can barely scrape together 100 million yuan. Having an extra 15 days will make it easier for her to raise the funds.

The two agreed that Hongtang would pay 40 yuan upfront for the first shipment, and the remaining 30 yuan would be paid for each of the last two shipments.

After crossing "traditional Chinese medicine" off the supplies list, Hongtang felt much more at ease. Basic survival supplies were secured; the rest would depend on "luck."

If you're really short of money, or if you urgently need it, then online loans or blacklisted accounts will do. If the apocalypse doesn't come, then sell the energy stones in your space as gems; they'd be worth at least several hundred million.

Hongtang pondered to herself that she also wanted to hack into the accounts of foreign tycoons and make money, just like in the movies, but she didn't have the ability to do so.

I suffered the loss of being uneducated.

Lost in thought, my younger sister had something to say.

[Host, Xishir replied to your message. She said that due to strict government control, weapons cannot be privately manufactured, so she can't help you.]

"Hmm, it's okay, we'll figure something out later."

[Host, there's more bad news: the extreme weather has arrived early. Extreme heat is expected at the end of next month.]

"What? How could this be?" Hongtang was shocked and somewhat incredulous.

[Some major accident must have occurred, disrupting the energy balance of the host planet. My sister can only predict disasters within the next three months. Something very bad is highly likely to happen in the future.]

Major accident?

Hongtang immediately took out her phone to check.

Sure enough, the headline read...