The May 10 general election was the first democratic election in the Republic of Korea to elect a member of the National Assembly to form the Constitutional Assembly on May 10, 1948.

With 35 observers dispatched by the U.N. Korean Committee monitoring the election, South Korea secured 91.7% of voter registration as the first ordinary and equal election in South Korea and conducted alone.

On May 31, the Constitutional Assembly was opened for the first time in the history of Korean constitutional government, and Rhee Syng-man was elected as the National Assembly Speaker and Shin Ik-hee as the Vice Chairman.

Namsan Cable Car is a cable car section that runs between the platform in Hoehyeon-dong, Jung-gu, Seoul and the platform near the top of Namsan Mountain in Yejang-dong, Seoul.

It is Korea's first passenger cable car, which started operation on May 12, 1962, and is one of the most famous tourist attractions in Seoul.

King Sejong was born on May 15, 1397 in Hansungbu Junsubang (now located in Tongin-dong, Seoul) as the third son of King Taejong, the third king of the Joseon Dynasty, and became the fourth king of the Joseon Dynasty in 1418, when he was 22 years old.

King Sejong made many achievements during his reign of 31 years and six months until his death at the age of 54. In 1420 (the 2nd year of King Sejong's reign), Jiphyeonjeon Hall was established to cultivate promising talents and to promote learning to maintain the rituals and systems underlying Confucian politics.

The creation of Hunminjeongeum, the greatest achievement of the time, was also a result of King Sejong's desire to communicate with the people.

Through the fusion of Confucian politics and independent culture, it brought great prosperity to politics, economy, society and culture during the Joseon Dynasty.

Teacher's Day is a day made to thank teachers for their hard work and is enacted and implemented in various countries, and every year October 5th is celebrated as World Teachers'' Day.

In Korea, Teacher's Day was established on May 15 in time for King Sejong's Gregorian birthday from 1965.

The government will reward education contributors at the ceremony on Teacher's Day, and the winners will be given opportunities to inspect domestic and foreign industries.

In addition, various school alumni associations, women's organizations, and social organizations voluntarily offer private banking services, especially by launching a "Finding Old Teachers" campaign to thank their teachers for their grace and deepen their priestly relations, while finding and comforting those who are suffering from illness and living difficulties among retired teachers.

The seniors and juniors and students hold a "Night of Grace" with their old teacher and teacher to thank their teacher for his grace, and attach carnations to his teacher. In addition, special lectures, sit-ins, and tea parties on the role of teachers will be held.

It aims to promote the importance of family and to create an atmosphere of active participation in individuals, families and society for healthy families.

In 1989, the 44th United Nations General Assembly set 1994 as the 'World Family Year' and designated May 15 as 'World Family Day' with the aim of raising awareness among the government and the private sector about the role and importance of family responsibilities.

In February 2004, May 15 was designated as Family Day by the Framework Act on Healthy Families.

On May 15, 1967, the Silla Oak investigation team announced that they had discovered the tomb of King Munmu in Silla.

According to the Samgungnyusa (The Heritage of the Three States), King Munmu left a will that if he cremated after he died and buried it in the East Sea, he would become a dragon and prevent the Japanese invasion of the East Sea.

It is located off the coast of Bonggil-ri, Munmudaewang-myeon, Gyeongju-si, Gyeongsangbuk-do.

This rock, called Daewangam, is a natural rock in the sea close to the beach, and was designated as Historic Site No. 158 in 1967.

The Royal Ancestral Ritual in the Jongmyo Shrine and Its Music is also known as 'Jongmyomusic' as the general name for instrumental music, song and dance performed at the memorial service for the kings and queens of the Joseon Dynasty.

It is also called Jongmyo Daeje because it was a large and important ritual held in Jongmyo during the Joseon Dynasty

It is a democratization movement held by citizens of Gwangju Metropolitan City and Jeollanam-do region from May 18th to 27th, 1980.

They demanded the abolition of martial law, the resignation of new military personnel, including security commander Chun Doo-hwan, and the release of Kim Dae-jung.

It was the political tragedy that caused the most casualties after the Korean War in 1950, and was one of the biggest events in the process of democratization in Korea.

At the time of the outbreak in 1980, it was defined as a riot (Gwangju Incident) by very few impurities and mobs, but on April 1, 1988, after the inauguration of the 6th Republic, it was formally defined as the'Gwangju Democratization Movement' by the Democratization Promotion Committee.

"May 18 Democratic Movement Anniversary" was established as a court anniversary in May 1997, and in May 2011, a documentary related to the May 18 Democratic Movement was officially registered as a UNESCO World Record Heritage Site.

On May 19, 1957, the 1st Miss Korea Contest was held at the Seoul Metropolitan Theater in Jung-gu, Seoul.

Seven people who passed the preliminaries participated in the finals, and Park Hyun-ok, the winner of the first competition, participated in Miss Universe.

'Invention Day' is a day defined to promote the progress of technology by promoting invention ideas, and is May 19 every year.

This was established in 1957 to commemorate the day King Sejong officially began using the rain gauge on May 19, 1442, after Jang Yeong-sil invented the world's first rain gauge in 1441, 23 (the year of King Sejong's reign).

In March 1973, the day of invention was merged into the day of the sky under the regulations on various anniversaries, etc., but was revived in 1982 when the Korean Patent Association expanded and reorganized into the Korea Invention Patent Association.

Meanwhile, the rain gauge invented during the Joseon Dynasty was made with the need for a more scientific method to prepare for drought and flooding for agriculture.

It consists of a steel cylinder with a depth of 241 cm and a diameter of 16 cm, and a rain basin made of stone. The water collected in the barrel was measured with casts.

In particular, the rain gauge of Joseon was about 200 years ahead of the one invented by Italy's B. Gattelli in 1639.

It was established to commemorate the birth of Sakyamuni.

It is one of Korea's legal holidays, which falls on the 8th of April in the lunar calendar.

The date of the Gregorian calendar varies from year to year, usually in early to mid-May.

On May 22, 1984, the light bulb section of Seoul Subway Line 2 was opened.

With the complete opening of Line No. 2 connecting the two Koreas of the Han River, Seoul is in full swing in the subway era of subway trains.

The Japanese Invasion of Korea in 1592, from May 23, 1592 to December 16, 1598, was a war between Joseon and Ming China versus Japan.

It was an international war that shook the history of East Asia in the 16th and 17th centuries, with tremendous influence not only on Joseon but also Ming and Japan, which were the main stages of the war.

From the Japanese perspective, although the original purpose of 'conquering Joseon and entering the continent' was not achieved, it also gained cultural benefits such as pottery manufacturing techniques, looting metal types, and inflow of Neo-Confucianism by looting various human and material resources from Joseon.

It also re-emerged as a major player in the international situation in East Asia a thousand years after the Battle of the Baekgang River in the 7th century. The beginning of the fall of the Ming Dynasty, which had reigned as an absolute hegemonic power in East Asia, was also foreign exchange, including the Japanese Invasion of Korea in 1592.

It is no exaggeration to say that the Korean peninsula was devastated by the war.

There are many legends about Yi Sun-sin, who is revered as a sacred hero, as well as about various righteous army generals throughout the country, and it is still being handed down to this day.

On May 25, 1973, 200 male athletes and executives from 19 countries participated in the first World Taekwondo Championships.

On May 28, 1973, 35 representatives from 19 countries gathered to form the World Taekwondo Federation.

Until the 7th competition in 1985, only men's competitions were held, and the 1st World Women's Taekwondo Championships were held together with women's athletes participating in the 8th competition in 1987.

From June 1, 1961, recruitment for the first year of ROTC (student military training group) at 16 universities nationwide began.

The ROTC system is for the efficient recruitment of beginner officers and is modeled after the US school district system.

The 1st semester broke through the 3-on-1 competition, and 2,642 people passed, of whom 1,768 were appointed in 1963.