In the 22nd century, the definition of a drug dealer has changed dramatically, and one of the most important is the sale of robots with biochemical knowledge, which can easily be purchased by anyone to make a wide variety of narcotics. The one to be executed today is the source of most of the drug-making robots on Earth - a guy who has broken the artificial limits on robot intelligence set by the Academy of Sciences of the Earth Commonwealth.

The drug dealer is a doctoral student at MIT who has taken the road of crime, and the most dangerous path in the world, because he has a girlfriend who likes to live a luxurious life, and he does not hesitate to take risks to satisfy her vanity. Breaking the limits of robot intelligence is one of the most serious crimes of the Earth Commonwealth, because humans and robots once had a life-and-death battle, and humans narrowly won. It was after that great war, in order to prevent the tragedy from happening again, that the Commonwealth of Earth enacted a law punishing the death penalty for criminals who broke the robot limit.

The death penalty is inhumane, and death row inmates are often wrongly sentenced, so there have been few cases of death penalty in the Commonwealth of Earth in recent decades, and in their place are very long sentences. With the progress of science and technology, the life span of human beings is getting longer and longer, and the prison is overcrowded. The capital punishment that this drug dealer enjoys is not in this digital way, because he is too dangerous and must be completely destroyed, and it would be too bad if he escaped from prison one day and took revenge on the entire human race.

The court's sentence to exile him back to at least 200 years ago was the latest advance in the science of time travel for scientists, the first time it was used to execute a death row inmate, which attracted widespread attention.

Because it is an exile, only the minimum supplies needed for the survival of the death row prisoners are given, otherwise it will become a return to the past for vacation, what deterrent effect does it have on the death row prisoners? In the beginning, the executive decided that he should be allowed to cross naked. But when crossing, the Himalayas need to be used as a landmark, and when he wears it to the cold plateau, he is afraid that the traverser will not be able to survive, so he added a set of warm clothes. After the death row prisoners protested solemnly, the executive added something to him, a handheld device that can rely on the starry sky positioning, including a world map, so that he can get out of the plateau. A particle beam pistol with an effective range of 100 meters and a thousand shots, which can be used for self-defense and hunting. A Swiss Army knife used to slaughter wild beasts. A Zippo lighter. A snow tent.

The most expensive thing here was the particle beam pistol, and the executive originally wanted to give him a gunpowder-style gun, but this kind of gun had only been eliminated for a long time and was difficult to find, so he had to give him an entry-level particle beam pistol. Although the Zippo lighter is an ordinary product, it is completely different from the lighter used 100 years ago, it uses a nuclear battery, which can continuously electrolyze water into oxygen and hydrogen, which can be burned by mixing the two, as long as it is replenished with water, it can maintain its function, and it can be burned for 10 minutes at a time. As for the Swiss Army knife, it's beyond your imagination, it only has two ends, one is a dagger with extremely sharp nanotechnology, which really sharpens iron like clay, and the other end is a universal tool, with hundreds of built-in tool modes, you can also create a tool yourself when it appears in a softened form, and then store it in a database, from corkscrews to scissors, which is an application of plastic alloys. The snow tent, the most inferior tent in this era, was also solar-constant temperature, and it was a nanomaterial, the size of a mushroom, which began to expand after hitting the ground, and could be as large as a yurt.

The final request of the death row inmates was a molecular separator. This thing can separate most of the substance with high purity, and can be used to make table salt, and the death row prisoner said, "You can't let me eat the barbecue, and I won't have enough salt for a few days." ”

The executive is not an engineer, and he does not understand that this molecular separator, once in hand, may be more effective than the particle beam pistol. Enforcement of death row inmates is budget-constrained, with the executive saying, "Atomic separators are expensive, and the budget is insufficient." Forget it! ”

The death row inmate screamed, "This must not be missing!" You can buy second-hand ones! ”

The executive officer really purchased a second-hand molecular separator, and the death row prisoner looked at the model and was sure that with it, he would not be afraid to go all over the world.

Well, come on, send me to the Ancients!

Executive: "Now, you can choose a point in time, from 200 to 2000 years ago. ”

Finally came, and the death row inmate cried and called his girlfriend's name "Wanqing ......"

Executive officer: "The time coordinates are determined, the last years of the Qing Dynasty, between 1840 and 1911. Spatial coordinate determination: Northern Tibetan Plateau. What else do you have to say, exile? ”

The death row inmate knew that the executive had misunderstood that he was going to the late Qing Dynasty, but ...... Where to go is not the same? 200 years ago, human beings were uncivilized fools. So, he didn't deny it, the late Qing Dynasty will be the late Qing Dynasty.