On March 23rd and 24th of 1919, Jo Jong-seo, Mun Mu-hyeon, Choe Bong-hak and others who lived in Nambuk-ri, Yongyu-myeon and Bucheon-gun gathered at the house of Jo Myeong-won to plan the independence movement and formed a secret association called HyeolseongdanThey determined their plans for March 28, and made the Korean flag out of cotton.
At the same time, four people, including Jo Jung-seo, wrote about 80 letters inscribed with the words, "We will carry out the independence movement for Joseon so gather in the Gwancheong-ri plaza on the 28th'', and circulated them to each village.

On March 28th, four leaders and representatives of each district, Yun Chi-bang, Kim Yun-bae, Yun Bo-shin, Yu Ung-ryeol, Gu Gil-seo, O Gi-seop, gathered to declare independence in the Gwancheong-ri plaza.
Following this, 150 residents joined the movement, and using the Korean flag that they had previously prepared, they cried out for independence.
As a result of this protest, 11 people including Jo Myeong-won were arrested and spent time in prison.
This fact is found in records such as "Judgment of 11 people including Jo Myeong-won", "Judgment of 10 people including Jo Myeong-won", and 5 volumes of the "Independence Movement History Data Book".

At the entrance of the village, there is a monument to the independence movement.
In the past, there was a town office at the three-way intersection of the village, and the front of the town office was called Gwancheong-ri plaza, so you can check out the place that was used for the national independence demonstration.
Residents of Deokgyo-dong, Incheon, erected this monument on March 28, 1983 to commemorate the demonstration for national independence in Yongyu-myeon.
The height of the foundation is 1.5 m, and the height of the monument is 2.9 m.