"Martial Arts" was released in China. There is an ambiguous scene in the film: Tang Wei washes the swim bladder with a virtuous face, and Donnie Yen comes over and says, "Don't bother, you know I don't like the fishy smell." Tang Wei asked anxiously, "So ... what if I have another child?" Donnie Yen immediately responded very manly: "Then give birth, it will be a little harder at most."
As the only "passionate dialogue between husband and wife" in the whole film, passion also popularized a little knowledge to us: the original swim bladder can be used as a condom. Yes, the swim bladder can really be used as a condom.
The earliest condoms were invented for the emperor.
In the past, ancient people used various methods to prevent pregnancy, such as smearing crocodile feces in vagina, putting cotton balls soaked in lemon juice, interrupting sexual intercourse, safe period and so on. However, although these methods have some truth, they are not so reliable. Until the Middle Ages, an important event happened in the history of human contraception-it is said that King charles ii of England lived in luxury and had many illegitimate children, which was very disturbing. So a physician named "condom" invented a real condom for the emperor and named it after himself (some people say that the name condom comes from word formation and the doctor is just a legend, so I won't go into details here).
Of course, there was no such good rubber formula and processing technology at that time, so what did they use to make a set? Smart people's goals are some natural, light and strong substances-that is, swim bladders, as well as animal intestines and skins.
Make a "natural" condom.
These dirty, slippery, smelly and fishy things, of course, can't be put on directly and start working. There is still a lot of work to be done to make condoms. Let's take sheep intestines as an example to briefly talk about the production process of these "natural" condoms.
First, soak the sheep's large intestine in water for several hours, and then turn the soaked intestine upside down. Then continue to soak the intestine with weak alkaline solution 1 day, and change the solution every 12 hours. After soaking this time, gently scrape off the intestinal mucosa, leaving only the muscle layer. Then fumigate with sulfur. After treatment, wash with soap and water, blow dry, cut into 17-20 cm sections, and tie them with ribbons.
In addition, there are some other schools of condom making methods, which are similar to the above process. Finally, let's learn a little bit about it. At that time, the enema master, many laymen did this.
At that time, condoms made of intestines were beyond the reach of ordinary people and were very precious. They have to wash it and use it next time until they are worn out. As for the swim bladder suit, because raw materials are hard to find (where there are so many suitable swim bladders), it is even more precious to have rare things.
Thus the rubber sleeve was born.
Fortunately, Charles Goodyear, an American, obtained the patent of rubber vulcanization from 19 in the 1940s, and condoms entered the era of industrial production.
Since the Republic of China, the use of condoms has been paid more and more attention in China, becoming a concrete symbol of cultural exchange between Chinese and western utensils. In the literature and translation of the Republic of China, the names of condoms include kidney clothes, penis bags, romantic bags and so on. Materials also include silk, swim bladder, sheep intestines, flax, rubber, etc. Then, due to the different materials, different use effects, and the gradual reduction of rubber prices after industrial production, rubber condoms have gradually become the first choice for the public.