Yoo Kwan-soon was born in 1902 in Ryo-ri, Mucheon-gun, Chungcheongnam-do Province, North Korea (present-day Cheonan City). His father is Liu Zhongquan and his mother is Li Shaoti, and he has half-sister Liu Yuxi, brother Liu Yuxi, and two brothers Liu Renxi and Liu Kuanxi. His father was a cheerful man who was a righteous man who neglected his wealth and often lent money to poor families. In 1916, with the assistance of Alice Sharp, an American female missionary of the Christian Overseer Sect, she was admitted to the general department of the Ewha Academy in Beijing for free, and in 1918, she was admitted to the advanced department of the Ewha School.
When the Trinity Movement broke out in 1919, Yoo Kuan-soon also participated and became one of the 33 signatories of the Declaration of Independence. To this end, on March 5, Ewha Academy received a "revision order" from the Governor's Office of North Korea and suspended classes, and all students had to leave the school and return home. Liu Kuanshun thus returned to her hometown of Cheonan, but along the way she continued to preach a message of independence to catholics and schools in other churches. Later, he and other preachers planned the Independence Long Live demonstration. On April 1, the Independence Long Live Demonstration, planned by Yoo Anderson and others, was held at the Aunae Bazaar in Cheonan, attracting more than 3,000 people from cheongan-gun, even Cheongju and Jincheon. Liu Kuanshun distributed Tai Chi flags representing independence to the masses, and led the masses to march and call for independence slogans. However, the speech was suppressed by the Japanese gendarmes and police, and one demonstrator was injured and killed. Liu Kuan incidentally led the demonstrators and the bodies of the dead to protest at the gendarmerie dispatch station. During this time, some angry youth cut off the telephone line of the dispatch station and attempted to storm the dispatch station. Xian and the police opened fire on the crowd, and Liu Kuanshun's parents and 19 others were killed on the spot, and Liu Kuanshun was arrested at the same time.
After his arrest, Liu Kuanshun was sent to the Xidamen Prison Inc. in Beijing and sentenced to 7 years (3 years) in prison. On September 28, 1920 (October 12, 1920), he died of malnutrition and torture in the prison of the Seodaemun Penal Office[source request]. She was only 17 years old when she died. After hearing the news, the head of the Ewha Academy applied to the criminal office to retrieve Liu Kuanshun's body, but was refused.
In 1962, based on her contributions to the country, the South Korean government posthumously awarded her the "Founding Medal" of the third class and was posthumously awarded the title of "Martyr of Independence". To this day, there is still a memorial hall for the martyr Yoo Kuan-soon in Cheonan city, and the former site of the Seodaemun Penal Office in Seoul has been converted into a history museum and is open for public viewing.
In 2019, on the centenary of the March 100 Movement, then-President Moon Jae-in posthumously awarded Yoo Kwan Soon the Order of the Republic of Korea, first class, in recognition of his impact on society after South Korea's independence.