Cold in the third nine, hot in the second nine.
Early January, right in the Minor Cold season, the coldest time of the year. Gathering around, the earth is a vast expanse of yellow and brown, with occasional trees, their thin, long branches sharply piercing the sky, bare, only bird nests providing some obstruction to the view. By late January, the theoretical temperature rises slightly, but in practice, it's not much different.
The ice on the Yellow Sand River is three feet thick, with few large boats passing through. Looking out, all you see are horses with nails on their hooves. Only the places before and after the waterway will have officials from the Fishing Tax Office specially responsible for breaking the ice to ensure passage.
However, the downstream of the Yellow Sand River is a hundred miles wide, and it cannot be completely frozen.
Icing begins with "shore ice," then spreads towards the river center.
