Brief analysis:
"Julian Waghann was concentrated in northern Japan", and the poet expressed his belief that he was eager to recover lost ground with eager anticipation. It shows that although the poet is in pain, he is not desperate. The poet firmly believes that one day the army of the Song Dynasty can pacify the Central Plains and recover the lost land. With this sentence, the mood of the poem changed from sadness to passion.
"The family sacrifice has been forgotten", and my mood has changed again. However, I can't see the day when the motherland is reunified, so I have to pin my hopes on future generations. So I told my son affectionately, don't forget to tell your father the good news of "Beiding Zhongyuan" when offering sacrifices at home. The poet's firm belief and solemn and stirring desire fully reflected Lu You's feelings of patriotism and service to the country, which infected and deepened his feelings of loving the motherland.