April 30, 1975 marked the end of the Vietnam War, a conflict that lasted for decades, causing millions of casualties and suffering for millions of families. It was a period in the dark history of the nation, but also a moment of solidarity, courage and continuous sacrifice of the Vietnamese people.April 30 not only marks the defeat of the opposition regime but also symbolizes the victory of the courage and invincible determination of the Vietnamese people. Although the war has ended, its consequences still exist. Peace is not simply the absence of war, but also the unity, harmony and development of society. April 30 opened a new era, an opportunity for the Vietnamese people to rebuild the country after years of painful war.Therefore, we not only celebrate this day to remember those who sacrificed their lives, but also to remember the spirit of solidarity, determination and patriotism of the Vietnamese people. We need to continue to maintain and develop those values, building a peaceful, strong and prosperous society.