A few days before Christmas in 1996 in Another World, the panda pavilion at London Zoo was filled with tourists who came to see the giant panda Ming Ming.

A short silver girl with a small height and a tall blonde girl sat in the rest area outside the panda pavilion, waiting for someone to buy a drink.

The silver-haired girl holding the camera said, "I don't know what my father's expression will be when he sees a picture of himself playing a panda in the future." ”

The blonde girl smiled but didn't say a word.

At this moment a couple walked in front of them, and the girl was still holding a bouquet of blooming roses in her hand. The two maidens sitting not far away both discovered that the rose had been enchanted.

The silver-haired girl asked the blonde girl curiously, "Eldest sister, when was the first time my brother-in-law sent you flowers, and where was it?"

As a result, the corners of the blonde girl's mouth twitched a few times, she looked up at the sky helplessly, and then said lightly: "That's a place you can't think of." ”

Dividing line

The rain had finally stopped after a day and two nights, and the sky was blue, with only a few marshmallow-like clouds drifting by.

A cab drove south out of Abyss City, then stopped at a gate a few kilometers away.

In front of the gate, Diana rested her head on Charles's shoulder and laughed breathlessly.

The doorman at the Royal Charles Sewage Treatment Plant 1 looked at the two children in front of the door who had never seen them, and couldn't understand what they were doing.

After Diana had had enough of laughing, Charles pulled her to the janitor's room and handed the doorman a letter of introduction.

The sewage treatment plant is a new thing, and in the past, many students from various schools organized visits to visit the plant, and the doorman did not feel anything strange about the two children who came to visit with a letter of introduction.

The doorman said to Charles: "Today is a day off, only the people on duty are inside, don't run to the forbidden place and be careful not to fall into the water, just shout for help if something happens." ”

After Charles assured them that they would visit obediently, the doorman gave them a badge to wear around their necks.

Perhaps because of the frequent visits, the sewage treatment plant is signposted, and next to each system there is a sign explaining its function and principle.

The plant was built on top of Abyssal City's existing sewage drainage system, which was previously discharged into the river through a huge sewer just a few kilometers from the city.

Charles and Diana briefly took a tour of the coarse grates, fine grates, and primary sedimentation tanks, before heading to Slime Gully, their first major target of the day.

This is the heart of the sewage treatment plant, and each slime ditch is about the size of three basketball courts, and inside is a deep ditch that is wide and arranged to look like a clipper.

Unlike the oxidation ditch that Charles saw in the sewage treatment plant in his previous life, which is divided into anaerobic and aerobic zones, the blower with the same air output principle as the wind turbine is pumping air evenly into the trench through an iron pipe.

The brown domestic sewage in the ditch is pushed by the strong air flow from the iron pipe at the bottom, and the bubbles continue to rise to the surface of the water, and slimes the size of football can be seen carried to the surface of the water by the bubbles and the current.

The two visitors stood upwind for a moment, and Diana said, "These slimes look like jellyfish in the sea." ”

Charles nodded and said, "It's up to them to digest the pollutants in the sewage." ”

At this time, someone behind them said, "These slimes are specially bred aquatic slimes, and they can adapt well here." ”

Charles and Diana were both startled, they didn't feel that someone appeared behind them at all, indicating that it was the master of the masters.

A humanoid dragon dressed in the white lab coat worn by researchers stood beside Charles, holding on to the railing with both hands, smiling at the slimes in the ditch as if they were his own children.

Charles thought for a moment, then asked, "Are you Lord Virdra?"

Virdra smiled, turned to look at the two of them, and replied, "Yes, it's me." You're Charles and Diana, and I've heard your names a lot these days. ”

Charles smiled slightly, "It's everyone who exalts us too much." ”

"There are talented people in the country," said Virdela, "I have seen many talented young people and girls like you, even better than you, but very few can dazzle all the way, and I hope you can dazzle all the way." ”

"Thank you for your teachings. Charles and Diana saluted Virdra.

"You don't have to be formal. "Speaking of which, I have to thank our Demon King and Charles, for if you hadn't made it possible to use slimes to treat domestic sewage, I wouldn't have been able to easily find enough slimes to study." ”

Charles sighed sincerely: "Your Excellency's research on slimes and their products is for the benefit of this world!"

"Hmph!" Virdra smirked twice, "My goal is to make slimes stand tall on the earth, so that this world can't leave slimes!"

"Your Excellency has had quite a success. "For the foreseeable future, slime tire rubber and slime sole rubber will be indispensable in this world." ”

Virdra smirked there.

"I haven't done enough. Veldra shook his head and said, "Now people in various fields need slime glue that is more resistant to corrosion, heat, cold, pressure and wear, and there is a lot of pressure on my side." ”

Then he snapped his fingers and said, "Abyss City's tap water system has already begun to be designed, and they asked me to provide slime rings that are non-toxic and harmless, do not dissolve and degrade in water, and can withstand water pressure. ”

"The vehicle factory has always been dissatisfied with the wear resistance of tires, especially in the future, after the wind turbine is used in the car, the weight of the car and the cargo will be greatly increased, and the slime glue used to make wheels will need higher strength and wear resistance in the future. ”

"After Rurika's pump came out, they asked me to make slime glue that was suitable for water pipes. ”

"The biggest headache is the sheep head in the research institute, he comes to me every three days and two ends to ask me for a perfectly insulated, non-burning, corrosion-resistant and strong enough slime glue to insulate wires, and what to say that the future is the era of their play with electricity. ”

Charles and Diana listened quietly as Virdra whined there.

Now that the kingdom of Rurik is on the eve of an industrial revolution, in a world without rubber trees, all industries are ready to use rubber substitutes, and everyone is eyeing slime glue.

And in this world, there is only Virdra who has in-depth research on the deep processing of slime glue, and most of the other people's understanding of slime glue only stays at the level of catching a slime and cutting it and boiling it dry.

As a result, when the advantages of slime glue were recognized by everyone, one by one they became evil reachers, and they asked Virdra for slime glue to meet their needs.

After complaining, Virdra said to Charles, "Go, I'll take you to my lab." ”