Seeking to understand Qi Jiguang's "going to the altar"

The first song:

The first couplet "has always been a sacrificial song. What's the purpose of coming on stage today?" The poet's confession has always been practiced by actions and expressed in words that he is willing to die for his country. If you really climb this mountain called Sheshetai, what will happen to your thoughts and feelings? After Qi Jiguang arrived at the border of the Northern Empire, he took pains to understand the terrain, patrol, rectify camps, build side walls and forts, and created a set of unique tactics that were closely guarded by city walls and enemy platforms, and fought by foot, riding and car.

For these schemes, the sideburns have gradually faded and turned white, but the court did not pay attention to them and fully adopted them. What is this for? Poets naturally feel sad and lost. Then the couplet "Point out the loneliness of its politics, who is Xiao Shu and Liu Hai?" Who made the hero's hair white? Poets are not decadent and depressed, but confused and not understood.

The "sword of the Necklace is divided into Hu cakes and people, and the hands are full of springs." He Lian's Looking Back at the Singing and Dancing Places, Respect the Front Row and Seek Harmony. Here the poet made a contrast through rendering: First, he wrote that the soldiers stayed on the road, eating biscuits that could only be separated by swords and drinking cool mountain springs, so he felt very satisfied. Compared with the noble princes and grandchildren, they are magnificent, singing and dancing, enjoying delicacies and delicacies, and feel that the spices are not fully put, which shows the poet's indignation at unreasonable social phenomena such as "dividing the sword into Hu cakes" and "respecting the tripod".