14, a This poem is not lyrical.
15 b "and our frozen red flag can't flutter in the wind" and "Tuo" indicate that the wind is very strong, as if the red flag is being dragged. -Here, the wind is personified. But the red flag has been frozen by snow and ice, and it can't be rolled up any more. Snow and cold weather are vividly described.
19d' Guo' refers to the capital, a place, not a landscape.