"Have we discovered a new human, a flying birdman? Liu Kunlun whistled, he was not shocked, because he had just seen the winged man on the mural.

Ding Jiajun stepped forward to inspect, he put on gloves, picked up two bones and looked at them, and said: "It's not a birdman, this may be a role like a monk priest, the ancient elephant male admires the Dapeng bird the most, you see, the bones on the wings are hollow, obviously bird bones, and human bones are completely different, I visually measured the height and weight of this person, as well as the area of the wings, the lift generated by the wings is not enough to drive the human body, so the wings and the person are not the original match, they are funeral goods." ”

It's different to have a scientist by his side, and a mystery is solved in a few words, Liu Kunlun and Ji Yufan suddenly realized and gave a thumbs up to show their approval.

Everything in the underwater cave is as described, the gold stored alone is worth a fortune, gold is the most stable substance, it has not been rusted for thousands of years, there is no dust in the cave, and these gold coins shine in the faint light.

Ding Jiajun picked up a gold coin and looked at it, and said, "This is a gold coin from ancient India, with Sanskrit on it, and the time is about 100 BC." ”

"Sure enough, it's an archaeologist. Liu Kunlun praised.

Ding Jiajun looked for it, and picked up a gold coin to identify: "Well, this one is interesting, this is a commemorative coin of the Ptolemaic Dynasty of ancient Egypt, issued in the third century BC, the head on it is Queen Arsinoy, it seems that the business of the Zhangzhung Dynasty is very developed, can you imagine, during the Qin Dynasty, there was such a developed civilization on the Qinghai-Tibet Plateau, where merchants from North Africa and India met, and of course, merchants from the Central Plains, who traded silk here, Crafts and all sorts of exotic beasts, even slaves, like you say, I really want to see it, by the way, what triggered the apparition?"

Liu Kunlun recalled that at that time, Bigfoot took a punch from himself and retreated to the edge of the stone wall, Ji Yufan picked up the weapon and threw it to himself, followed by the phantom in the next moment.

He walked to the location of Bigfoot at that time according to his memory, groped on the stone wall, touched for a long time, and sure enough, he found the secret passage mechanism, a metal handle on the wall, to be precise, a gold handle, the shape is very similar to the electric switch in the eighties, the grip part is wrapped with turquoise, there are many things on the Qinghai-Tibet Plateau, Tibetans like turquoise just like the Central Plains people like white jade.

"Ready, here!" Liu Kunlun pulled down the hand brake, but no phantom appeared, he waited for a while, pushed it up and pulled it down again, but there was still nothing.

Ding Jiajun stepped forward to observe, this hand gate is embedded in the cold wall, the workmanship is exquisite, but it is far from reaching the level of industrial processing, the strange thing is that this wall, dark black, cold to the touch.

"It's not a stone wall, it's metal. Ding Jiajun said, "The specific metal needs to be verified, but I am afraid that this kind of metal processing ability is not what the Zhangxiong civilization should have." ”

Saying that, Ding Jiajun looked for a gap along the wall, found a door behind a pile of bronzes, pushed the door open, there was a hole, the three of them walked into it, illuminated by the light, in front of them was a large pit similar to a swimming pool, square, there were neatly arranged dark gray metal plates in the pit, there were gold pillars above, a gold wire was placed on it, leading to a shaft with countless circles of gold wires wrapped around it.

Docking with the golden turquoise handle outside, is a huge, composed of gears, escapements, many parts can not be named, Liu Kunlun remembers when he was a child to see his father repair a video recorder imported from Japan, the degree of ingenuity is no less than that of a Japanese video recorder, but the size is enlarged.

Ding Jiajun watched the flashlight for a long time, and finally came to the conclusion: "I have a bold assumption, this pool is actually a large battery pack, the pool was originally filled with sulfuric acid aqueous solution, those metal plates are lead plates, and the lead-acid undergoes a chemical reaction, through the gold pole, with gold wire conduction into the machine, and this machine is a home theater system driven by electricity, well, not a video tape, but a video disc." ”

The two listeners felt that their imagination was not enough, and that the Zhangxiong people in BC could generate electricity and make video discs, which was too rebellious.

"You see, the disc is still in there, it's just that there's no power, and we can't see the contents of the disc. Ding Jiajun pointed to a certain place in the machine and said.

Liu Kunlun stepped forward to observe, and sure enough, he saw a round saucer, which seemed familiar, and he remembered that Li Ming had found a batch of stone plates on Bayankala Mountain, and the size was close to this.

He told Ding Jiajun about this, and Dr. Ding had also heard about the famous Bayan Kala Mountain Stone Plate, and the so-called alien ruins circulating in the outside world were purely conjecture, in fact, the stone plate did exist, but no one could decipher it.

"I have an idea, I'm going to build a model, I'm going to analyze the data from this battery, and we're going to use a lithium battery to simulate the power supply, maybe we'll be able to put out the contents of the disc. "Ding Jiajun's idea is very exciting, but it is also difficult to operate, this is a huge project, I am afraid that only three people can not complete it.

Liu Kunlun rubbed his hands and couldn't wait: "We have a battery in the car, how much do you want to dismantle, Dr. Ding, you bring a computer, hurry up and model it, and calculate it." ”

Ding Jiajun measured the data of the battery, this is really a battery, a whole pool of batteries, and then the three of them withdrew, investigated in the cave, took a few cultural relics, still put on a diving suit and went out, returned to the camp, and started work overnight.

Ding Jiajun didn't calculate the result after a night of calculation, he couldn't figure out how the sine wave direct current generated by this huge battery was supplied to the huge DVD player above, and the working principle of the DVD player also needs to be verified, because this is not an ordinary DVD player, it is a super DVD that can produce holograms, and the ability to process data is more powerful than the world's strongest supercomputer.

Liu Kunlun's work is very good, now the battery technology is much more developed than ten years ago, in the city new energy vehicles account for a huge majority, but in the no-man's land lack of convenience to replace the battery, is still using fuel vehicles, but these vehicles are also equipped with large-capacity batteries, belonging to the hybrid type, they dismantle a lot of batteries, can be combined into a large battery pack, but the battery is quite heavy, transporting these batteries to the underwater cave is a physical work.

They spent the next few days doing this, transporting batteries, diving, and reassembling batteries in underwater caves, while Ding Jiajun also carefully studied the DVD player, and he recognized transformers, capacitors, and Tesla coils, and marveled at the wisdom of the ancients.

Ding Jiajun said that someone once found a primitive dry battery in the Iraqi site, a small clay pot with asphalt, and an iron rod wrapped in asphalt in the asphalt, which should have been manufactured in the second century B.C., according to research, it is indeed a chemical battery, but it is used for electrolytic gold plating.

"It's amazing that civilizations more than 2,000 years ago mastered the use of chemical batteries. Ding Jiajun shook his head and sighed with emotion.

"But why is it lost?" asked Liu Kunlun.

"Because the social system of ancient times determined that craftsmen would not teach their unique skills at will, just like our ancestors, the inside is not passed on to the outside, the children are not passed on to the daughters, the bronze sword manufacturing process of the Warring States Period, at today's level, is exquisite, but it has not been handed down, because of secrecy. ”

The battery pack was in place, and the connection was completed, and the three of them were nervous, if they didn't do a good job of burning the ancient DVD player, it would be too much of a sin.

Ding Jiajun said: "It's going to be fine, I've controlled the voltage below the safe value." ”

Liu Kunlun pulled down the hand brake, but there was no response, and the DVD player did not work.

Ding Jiajun rubbed his chin: "If something goes wrong, I'll take a look." He walked around the battery several times, and suddenly realized: "I'm so stupid, I think in a fixed way, this is not a lead-acid battery, this is an alkaline battery! The lake water outside is an alkaline solution, and the battery can be used when the lake water is introduced." ”

The idea is right, the work is naturally smooth, it took some time to find the electrolyte inlet, and I also saw the subtleties of the ancients, the design of the water supply and drainage system is very advanced, watching the alkaline water injected into the battery little by little, Ding Jiajun talked about basic physics.

Liu Kunlun said: "Your foundation is really solid enough, it is more than enough to be a high school physics teacher, and you are still the kind of senior class teacher." ”

Ding Jiajun said: "I like science since I was a child, but I was forced to study liberal arts by Mr. Shao, when I am bored, I like to do Olympiad math problems to relieve boredom, and I also like to do five-year mock three-year college entrance examination questions to pass the time, by the way, there is a secret I tell you, the last math problem in last year's college entrance examination was out of me." ”

The two paced to the side, ignoring him.

After the alkali solution filled the pool, it automatically stopped, and the three of them withdrew, suppressing their excitement and waiting to see the ancient drama begin.

"Are you ready?" Liu Kunlun said, "I suggest you take a tablet of nitroglycerin or something, be careful that your heart can't stand it." ”

"I can stand it, let's get started. Ding Jiajun nodded, his expression was indifferent, and he didn't know if it was pretending.

Liu Kunlun pulled down the hand brake.

The music sounded, the cave lit up, the singing and dancing continued, the feast was the same, the singers sang and danced, and the murals on the walls were as bright as ever, and this scene was repeated.

"Doctor, look, lifelike, you try to touch it. Liu Kunlun said to Ding Jiajun, but the latter looked dazed.

"Can you see that?" Ding Jiajun asked, "but I can't see anything." As he spoke, he pulled down the hand brake.

The apparitions vanished, and the underwater cavern returned to its darkness and gloom.

"It's not a DVD player, it's not a hologram. Ding Jiajun was worried, "It's much more complicated than I imagined, this is a radio wave loaded with information directly on the cerebral cortex, and I still wonder what that Tesla coil is for, it turns out to be like this." ”

"Why can't you see it?" asked Ji Yufan.

"Just as someone can see a ghost and someone can't, the brain doesn't receive radio waves in certain frequency bands. Ding Jiajun gave a plausible explanation, "You two have the same physique, and I am different from you." ”