"Don't ask about the sorrows of the past, I am happy and singing to the sky" is the last couplet in "On the Military March" written by Yang Jiong, a poet of the Tang Dynasty. The meaning of this poem is don't ask about the pain of the past, I can live freely and sing to the sky freely.
The full version of "Conducting the Army March" is as follows:
Conducting the Army March
Tang·Yang Jiong
The sound of trumpets and drums at the border fortress is sad, and the cold winter Frost and snow cover thousands of miles.
The wilderness is quiet with cavalry galloping, and the moon is bright in the mountains, with few fish and geese.
Weeping and bidding farewell to Hu'er's hometown, the former wise king Xie Taikang.
How can I deserve to be treated like a dog or a sheep? I must sharpen my sword to repay my loyalty.
Don’t ask about the sad things in the past, I am happy and singing to the sky.
In this poem, the poet expresses his loneliness and helplessness, as well as the deep sorrow in his heart by describing the hard life in the frontier. The last couplet "Don't ask about the sad things in the past, I am happy and singing to the sky" reflects the poet's detached and carefree attitude towards life, and also has a sense of self-comfort.