Which movie's interlude is the Hero's Hymn?

It is a song that appeared in the movie Heroic Sons and Daughters. The relevant plot is: after Wang Cheng's heroic death, the whole army launched a campaign to learn from Wang Cheng. When Wang Fang learns of her brother Wang Cheng's heroic death, she wants to remember and send her thoughts and admiration to her brother by singing. When she encountered difficulties in composing the song, the head of the army also intervened in the creation of the song, and "Hero's Hymn" was born in the midst of twists and turns.

Heroes' Hymn - Lyrics Lyrics: Gongmu Curve: Liu Chieh

The beacon rolls and sings of the heroes, the four green hills listen side by side, side by side

The blue sky resounds with thunder and beats the golden drums, and the sea raises its waves for a chorus

People's warriors drive away the tigers and leopards, and they sacrifice themselves to protect the peace

Why is the battle flag so beautiful as a painting, and is stained with heroes' blood

Why is the earth so beautiful as a painting, and is it always in spring, and is it always in the spring, and is it always in the spring, and is it always in the summer?

Heroes jumped out of the trenches, a bolt of lightning cracked the sky, cracked the sky

The ground sank in and blocked it alone, and the sky collapsed with only one hand

The two feet went into the fire, and the body glittered with rainbows

Why is the flag so beautiful as a painting, and the hero's blood stained it red

Why is the earth in spring, and the hero's life in flowers

Why is the earth in spring, and the hero's life in flowers

Why is the earth in spring, and the hero's life in flowers

Why is the earth in spring?

Why is the war flag so beautiful and the blood of the heroes so red

Why is the earth always in spring and the lives of the heroes in flowers?