Yesterday a video went viral! A Chongqing man got up late every night, faced a martial arts secret book, and began to practice "shengong", making the family ping-pong and chickens flying and dogs jumping.
The wife was dissatisfied with this, wanted to see what he was practicing, got a look at the "secret book", there was no word on it, was it really some kind of lost mysterious kung fu, and it needed to open the "heavenly eye" to see?
This wife is also extremely clever, taking a lighter and baking it on the paper, the handwriting on the secret book immediately appears, but it frightens the wife into scattering, because there are four words written on it: Sunflower Treasure Book!
What's even more frightening is that the following is followed by the words "If you want to practice divine skills, lead the sword from the palace, if you don't do it from the palace..."
Netizens saw this video, immediately exploded, some people said that after laughing at the jianghu, the Sunflower Treasure Book was lost, did not expect to appear in Chongqing today, how did this man get this martial arts treasure?
Some people also said that the martial arts treasure book appeared, a bloody storm was inevitable, and world peace was in danger.
Someone also asked the wife, how long have you not confirmed that he is your husband?
There are also people who say, it's over, it's over, the husband and wife are going to become sisters and girlfriends.
In fact, so many netizens are hotly discussed, did not find that this man was deceived? What sunflower treasure book is practiced, isn't it military body boxing? If you don't move the scissors, if you move the scissors, then it is true that even if you are in the palace, you will not succeed. This year, it is not possible to practice with this secret book.
Some netizens also asked doubtfully, there is no word on this paper, why does the fire show the word as soon as it is roasted?
Well, that's where the real scientific answer is needed, but it's actually what's called invisible writing, which requires the use of invisible ink.
The first to mention invisible writing was the ancient Greek writer Aeneas in the 4th century AD; the first may have used the Byzantine popular science writer Feron, who at that time used oak gall and sulfuric acid to make ink for writing, and Feron described how to write invisibly with one ingredient and then use another ingredient to manifest.
Later, stealth writing was used to convey information in espionage activities, and methods of using various chemicals to carry out various invisible writing and display handwriting were well understood, if they were all used in the same way, they could all be cracked, and there was no secret to speak of.
In fact, various materials can be used to write invisibly, such as lemon juice, apple juice, orange juice and onion juice, etc., because it contains organic acids, there is almost no trace after writing on the paper, but once heated, it will form esters and show it.
There are also honey, sugar, milk, vinegar and other writing, through the fire roasting, ironing, hair dryer, oven, large light bulbs and other ways of heating, can display a certain handwriting; there is also a black thermal paper, written after the fire can be clearly displayed. All of this is the use of various chemicals at different temperatures, with different properties, or reactions with other substances, resulting in changes in morphology.
Netizens may be curious about what the man's "Sunflower Treasure Book" was written with? Why does it show that the handwriting is coming when it is roasted with fire?
This may be written in a specialized invisible ink that may contain cobalt chloride hexahydrate, a solution that is light pink and is almost invisible when the writing on the paper is dried; once baked on the fire, the cobalt chloride hexahydrate dehydrates and turns into blue cobalt chloride, and the handwriting is displayed. If you spray water again, the handwriting will disappear again.
The invisible ink pen stationery store that can actually disappear is for sale, mainly used for practicing words, and soon after writing, the handwriting will disappear, which can save paper for reuse. I was on duty once, I was pit by the invisible ink pen that I didn't know who had forgotten there, and I used the pen to write the experience and telephone of the emergency on the duty record, and then I went to check how to find it, thinking that I had seen a ghost. The last thing I found was an invisible ink pen, carefully observed the blank space, found the press marks, and then found the phone number.
So that's not bad, the most terrible thing is that people with bad intentions write IOUs with invisible ink pens. You think he's a good friend, you gave him the money, he left an IOU, you put it on the shelf, take it out after a few years, but there is nothing, you can't win the lawsuit. Therefore, to lend money to others, it is best to bring your own pen and paper, otherwise you will cry without tears when you are pitted.
In fact, this Chongqing man and his wife may have just acted out a play to make everyone happy, the only thing he will do, may be the military body boxing, and have not finished fighting, retired from the army for too long, right?