The first two sentences of this poem describe the frontier fortress scene at what time of day.

The first two sentences of the poem describe the frontier fortress scene at night in a day, and the first two sentences describe the real scene:

In the northern part of Hutian, the ice and snow melt, which is the season of herding horses. In the evening, the soldiers came back with horses, and the sky shed the brilliance of the bright moon. At the beginning, it creates a quiet and peaceful atmosphere that is rare in frontier fortress poems.

Listen to the flute on the fortress;

Snow-clean horses graze in the daytime, and Qiangdi guards the building in the moonlight.

Excuse me, where did the plum blossom fall? The wind blew all over the mountain overnight.