The poem "Sword Armor" is selected from The Book of Songs, National Style and Qin Feng, which originated from a folk song produced in the Qin Dynasty 2,500 years ago. The poem Jianjia is from The Book of Songs. The Book of Songs is the earliest collection of poems in the literary history of the Han Dynasty in China, which contains about 500 years of poems from the early Western Zhou Dynasty to the middle of the Spring and Autumn Period (from the 6th century to the 6th century). In addition, there are six poems with no content, that is, no words, which are called sheng poems. The Book of Songs is also called "Poetry 300". The pre-Qin dynasty was called "Poetry", or the integer was called "Poetry 300". In the Western Han Dynasty, it was honored as a Confucian classic, formerly known as The Book of Songs, which has been in use ever since. Mao Heng in Han Dynasty annotated The Book of Songs, so it was also called Mao Shi. Most of the authors of the poems in The Book of Songs cannot be verified. It involves the Yellow River Basin, starting from Shaanxi and eastern Gansu in the west, reaching southwest Hebei in the north, Shandong in the east and Jianghan Basin in the south. Poetry is inseparable from music. "Jane Jane warehouse, the millennium is frost. The so-called Iraqis are on the water side. " The theme expressed in this poem has always been controversial. Justice in Shi Mao is regarded as a mockery of Qin Xianggong's lack of etiquette; Today, Gao Feng thinks this is a lover's love song; The Book of Songs that We Misread in Those Years holds that this poem is Qin Mugong's poem of seeking wisdom, and Iraqis refer to Jiang Taigong, the hero of the Zhou Dynasty.