Sing: Sing loudly. Youth: refers to spring. Sentence meaning: to sing victory during the day, you must use wine to help you enjoy it; When you go home in spring, you can enjoy the spring scenery of birds and flowers, and you won't feel lonely. Write the author's happy mood after hearing the news of victory. This is Lenovo.

As can be seen from the antithetical sentences, daytime is good for youth, singing is good for company, and drinking is good for going home.