Beauty of the word "lock" in the poem "Stay in Wuguan again"

The title of this kind of topic is "refining words", and the solution is: first explain the words, then bring them into the original poem to analyze the artistic conception of the poem, and finally analyze the unique artistic techniques of the words separately. A: Lock means to lock, and in poetry it means to bind and trap. The image skillfully describes the wailing of the cold current at this time. Although it can block the door of hordes, it highlights the weight of this "worry"!