Last time, when it came to alien troops and Wan Ling, and He Ling crossed again, He Ling quickly developed the first "laser fire hydrogen. "Under the play of this technology, coupled with Wan Ling's excellent combat experience, the alien troops could only stop attacking Huaxia, and in several major battles in the Battle of Yanjing and the Battle of Xi'an, the Battle of Xi'an, the Battle of Ili in Xijing and the Battle of Shengjing in the Northern Capital, the aliens consumed a huge number of troops. Slowly, the tide of the battle stabilized.

At the same time, it slowly came to another important day, several timelines, at this time, Wan Ling had already inserted the brain-computer interface, He Ling came to his side to dissuade him, after all, the current situation is super laser technology, plus He Ling's expertise, "nuclear" technology, won't it still repel the alien forces? Wan Ling wants not to take risks, can only insert the brain-computer interface, but fortunately, Guangling in the last timeline also has brain-computer interface technology in the USB flash drive for Wan Ling, which makes the brain-computer interface safer and better recovery, but after all, it is a brain-computer interface, there is still a certain risk, but Wan Ling still insists on the brain-computer interface, after all, there are still many soldiers who have no experience, and if you still want to cross, you can also leave the combat experience to the Huaxia Kingdom of this timeline, so Wan Ling carries out the brain-computer interface as scheduled. He Ling and many scientists were present at the scene, everyone's mood was very heavy, a combat hero who had experienced countless wars had to take this risk, everyone was frowning, there was no way, in order not to live up to Wan Ling, they could only work harder. After He Ling returned to the Institute of Science and Technology, he saw that many of his colleagues in this timeline were standing at the door, waiting for each other, speechless, everyone also understood He Ling's mood at this time, and Wan Ling's battle deeds were also heard a lot by He Ling, knowing that this was a combat hero who spanned several timelines, and was worshiped and admired by the human troops of several timelines, but now they are so dedicated to the human beings of this timeline, and everyone is also in a heavy mood. Looking at He Ling again, dragging his heavy steps back to his seat, there was no way but to work hard to live up to Wan Ling's adventure.

Three years later, it is still the familiar underground base, and it is still the familiar room, but He Ling is wearing ordinary clothes to welcome Wan Ling to wake up as scheduled, Wan Ling looked at He Ling and also remembered Guangling in the last timeline, after all, they are all "friends of life and death", shh The team leader didn't know who this base was, after all, in order to protect many combat elites, and also to keep it secret and not let the aliens know about this plan, so he didn't even tell the team leader, and thought that this base was full of recruits. In this way, the team leader said familiar words, three years ago, aliens invaded the earth, and the war lasted for three years, but at this time, a man wearing a very sci-fi military uniform called a stop. The sci-fi military uniform is similar to the military uniform from the previous timeline, except that this sci-fi military uniform has something like a backpack on the back. He Ling whispered that this backpack-like thing was an "isotope battery", and the radioisotope battery was referred to as an isotope battery (Nuclear battery or Atomic battery). There are more than a dozen mechanisms for converting the decay energy of radioisotopes into electrical energy, such as "radioisotope thermoelectric generator (RTG)", "radiation volt effect", "decay coupled magnetic resonance", "reciprocating oscillating cantilever beam", "thermal ion emission", "decay energy-light energy-electric energy" and other so-called "predecessors sow and later people reap" Huaxia State in 2004, the Institute of Atomic Energy Isotopes undertook 100 milliwatt plutonium-238 isotope battery development", in two years to complete the overall design and a series of related process research, to develop samples. The Institute of Isotopes and its cooperative units have carried out a large number of simulation experiments, tracer experiments, and thermal experiments according to the formulated research plan. The final test shows that the performance of the battery fully meets the requirements of the technical indicators, and the indicators of radiation protection testing meet the national safety requirements, and the first plutonium-238 isotope battery in China was born. With this, the soldier will not worry about energy.

When the team leader saw this person in a sci-fi military uniform, he immediately stood upright, and it seemed that this person in a sci-fi military uniform was the leader's superior, and then looked at the team leader and shouted: It's the company commander. The man in the sci-fi style military uniform said that these people were not recruits, but hero leaders, and he was shocked in place, and he couldn't believe it. The man in the sci-fi style military uniform turned to all the spirits and said can he continue to fight? Wan Ling signaled that he could turn his head to He Ling and said You come too, He Ling had some soldiers in science fiction style military uniforms behind him and said: Why are the world's top scientists majoring in nuclear physics here? He Ling said, you are fine, it's really good, it turns out that in the first timeline, these soldiers in sci-fi-style military uniforms have encountered accidents, and this time Wan Ling and He Ling's efforts have come down, and these soldiers in sci-fi military uniforms are very confused.

After speaking, the group walked out of the base. But looking at the brand-new sci-fi style buildings outside the base, thousands of cutting-edge sci-fi style soldiers welcome the return of heroes, and each soldier shouts: Hero! Hundreds of cutting-edge tanks. It's almost identical to the previous timeline, except that each soldier carries an "isotope battery" behind him. In fact, both tanks and armor have "isotope batteries", but it is less obvious.

This timeline human beings have a variety of laser weapons in the USB flash drive that Guangling gave to all souls in the previous timeline, so this timeline is in need of abnormal energy and batteries. But fortunately, "radioisotope batteries" are He Ling's specialty, so it is not difficult.

In the past three years, He Ling has used his expertise to help the entire resistance force, to put it simply, in recent years, various nuclear power plants have been built to make the entire resistance force very sufficient, and also benefited from various reforms in Huaxia, the reform plan first built Du reactor power stations in all nuclear bunkers, and the country's thermal power stations were required to be upgraded to supercritical carbon dioxide power stations. On the consumer side, the tax increase on fuel vehicles will force consumers to electric vehicles. At the same time, energy storage hydropower stations should be built in places where conditions permit, and excess electricity will be stored. Several complete industrial chains have been copied, arranged in nuclear bunkers, and long-distance hidden subways have been built to link various nuclear bunkers and mines. So economical. Energy. Reform of the industry, etc. Even though the alien forces and various technologies are facing the resistance forces with very sufficient energy and electricity, the alien advance has gradually been frustrated, and the resistance forces have gradually begun to fight back. In this timeline, due to the sudden response of the alien forces to various countries, only resistance forces and neutral forces have been formed.