Located in southwestern Japan, the island that forbids women from entering is known to many as Okinoshima. For hundreds of years, only men have visited this island. In 2017, the Japanese island of Okinoshima was recognized by UNESCO as a world cultural heritage. Therefore, the public is more curious about Okinoshima Island. According to historical accounts, on the island there is a sacred temple Munakata Taisha Okitsumiya worshiping a sea goddess. This is the place to perform peaceful prayers for seafarers and successful businessmen in the 4th and 9th centuries. Every year, visitors can only go to Okinoshima island on a single day – May 27. Number of visitors is limited to 200 people. Before going to the island, the male tourists will perform the ritual of bleaching by removing the entire outfit on the body and soaking in the sea water. Once completed, they could set foot on the island. After leaving Okinoshima Island, male tourists are not allowed to bring anything as souvenirs nor disclose any information during a trip to the holy island for men only. As for Okinoshima Island’s ban on women, many argue that this tradition is practiced in order to protect the weak against a dangerous journey across the sea. The exact reason for the ban on women on the island is still unknown. Even so, many people are still curious about the activities that take place on Okinoshima Island – which is only for men. Invite readers to watch the video: Green tourism in the Ivory Coast’s plastic island. Source: THĐT 1.

Made of iron with a simple structure, the lever scale was a very familiar measuring instrument in Vietnam in the early 1990s and earlier. Few people believe that this scale has a very long history. (Photo taken at the Museum of Ho Chi Minh City).

According to Chinese accounts, the balance is an invention by Lu Ban (507 BC – 444 BC), a famous craftsman who lived in the early Lu Kingdom of the Warring States period in Chinese history.

Lu Ban’s lever scale is made of wood, consisting of scales, weights, and scales, operating on the principle of leverage. Based on the Red Dipper and the Lucifer Nam Dau, he engraved 13 engraved lines on the scale, setting 13 taels to equal 1 kilogram.

After the unification of the six countries, Tan Thuy Hoang added three engraved lines corresponding to the three-star “Phuc Loc Tho”, changed from 13 taels to 16 taels equal to 1 pound.

According to the old convention, the marking on the scale must be white or yellow, not be used black, implying that the business must be fair, integrity, not dark.

The first engraved line on the club scale is called the “leveling table”, its position is the hanging point of the weight with the weight hook when the weight is in equilibrium. The most important point when doing balance is that you have to choose the right “goal”.

Despite its simple structure, the balance lever has quite high accuracy, easy to use, not difficult to transport and manipulate. Over time, these scales have added improvements to make them more convenient to use.

From China, the balance was introduced into Vietnam and became the main weighing and measuring tool of the Vietnamese people for many centuries.

The lever scale was widely used until the end of the subsidy period, with its design not changing too much after thousands of years. It used to be an “inseparable” item of housewives across three regions.

Since the Doi Moi period, with the popularity of many modern scales such as clock scales, electronic scales … lever scales are no longer used in life.

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