In Tongliang, Chongqing, there is a deeply moving family letter preserved. "I signed up for the People's Volunteer Army of China" "After arriving in Korea, I must fight desperately and not be afraid of death. In order to make all the suffering people live a good life like our family"... The person who wrote this letter is the well-known combat hero Qiu Shaoyun. More than 70 years ago, on the battlefield of blood and fire, Qiu Shaoyun strictly observed the latent discipline, burning the fire without moving, until his heroic sacrifice. With the great feat of "discipline is more important than life, and life is more important than loyalty", he fulfilled his solemn vow written in his voluntary letter of joining the Party: "I am willing to give my all for the sake of the World revolution and the victory of the battle!" The revolutionary loyalty spirit of giving everything generously to accomplish the mission entrusted by the motherland and the people is an important part of the great spirit of resistance to U.S. aggression and aid in Korea. They transformed their infinite loyalty to the Party, the motherland, and the people into a fighting will of "never fear, never waver", a concept of "for the sake of the whole, for the sake of victory", and a resolute action of "wherever the Party points, it rushes", generously dedicating themselves to everything, facing death as if they were returning, living towards death, and successfully completing the mission entrusted to them by the motherland and the people. Yang Gensi, who rushed to the enemy with his Satchel charge, Hu Xiudao, who fought back more than 40 enemy attacks with his comrades, Niu Baocai, who connected the telephone line with his body conductive, Zhou Quandi, who still wanted to attack and kill the enemy even though his limbs were frozen to minus 40 degrees Celsius... The perseverance and belief of the volunteers and their loyalty to the Party and the people is a powerful manifestation of revolutionary loyalty. Our party has gone through countless hardships and hardships along the way, but no difficulty has overwhelmed us, and no enemy has been able to defeat us. What we rely on is the loyalty of millions of party members. In his short life, Cai Hesen cut back on food and clothing, wrecked his family, and gave everything to the party and the people because he was "loyal and loyal, and filled two rooms"; Xiong Henghan, facing the threat of the enemy, solemnly said, "Kill, kill, why say so much" because he firmly believed that "my path must eventually travel through the nine realms, and I will generously commit myself to it; Zhang Fuqing quietly sealed off his outstanding military achievements and silently devoted himself to the remote mountainous areas because he swore, 'For the Party and the people, I can sacrifice everything'; Huang Danian insists on devoting himself to the exploration of deep resources because he is determined to "join the torrent of devotees"... For more than a hundred years, generations of the CPC have not forgotten their original intentions and aspirations, and have worked tirelessly with the value pursuit and spiritual character of "death without regret", forged the brilliant cause of the party and the people, and composed a magnificent hymn of loyalty. Invincible because of having a "soul", unwavering because of having a "root". Today, in the face of a great struggle with many new historical characteristics, it is even more necessary to use practical actions to understand the heavy burden and overcome difficulties, to interpret the