Comrades can't understand the lyrics of which song is the sadness of parting?

The lyrics "It's hard for comrades to understand parting worries" come from the song:

Reluctant to let you go

Lyrics: sea breeze

Composer: Haifeng

Singer: Dongdong

Album: I am a soldier

Shake hands excitedly, comrade-in-arms You have to go.

Put on this big red flower, let the tears flow quietly, and think about how much joy and sadness there are on the way to the army.

The iron camp and the mobile soldiers and comrades-in-arms can't solve the sorrow of parting and hug you tightly.

Ah, I can't bear to let you go. Although I took off my rank and wore a bow tie, the character of a soldier remained in my heart.

Don't forget the wind and rain on the way to join the army. We are in the same boat.

I will remember what you said. It should be best for soldiers to go.

Ah, comrades-in-arms, comrades-in-arms are reluctant to let you go. Look at this training ground and look at these good comrades-in-arms

Ah, comrades-in-arms, comrades-in-arms waved their hands silently, and all the wishes could be expressed better in silence than in sound, hugging you deeply.

Ah, I can't bear to let you be a soldier. Feelings are as strong as wine, strong and gentle.

On the battlefield, thunder roared, moonlight sang, and the mission was raised above the head by stepping on danger and feet.

Ah, comrades-in-arms, comrades-in-arms are reluctant to let you go. Look at this training ground and look at these good comrades-in-arms

Ah, comrades-in-arms, comrades-in-arms, you stride forward, and the true colors of soldiers will never be lost.

Comrades, comrades are reluctant to let you go to spring, and spring will come from the military road.

Ah, comrades-in-arms, comrades-in-arms waved again. Silence is better than sound, all wishes are in my heart, all wishes are in my heart.