What does the square in front of the clothes of ancient officials in China mean? What does the crane in front of Lin Zexu's clothes represent?

In the twenty-fourth year of Hongwu (139 1), it was stipulated that the pattern of replacement was: Gong, Hou, Xu and Bo: Kirin and Bai Ze; Civil servants embroider birds to show civilization: one crane, two golden pheasants, three peacocks, four geese, five silver pheasants, six egrets and seven birds? Swallows, eight orioles and nine quails; Military attache embroiders animals, demonstrating fiercely: one product, two products of lion, three products, four products of tiger and leopard, five products of bear, six products of tiger, seven products of tiger, eight products of rhinoceros and nine products of seahorse; Miscellaneous duties: practicing magpies; Feng Xianguan: I'm embarrassed. In addition, there are other patterns with the theme of pythons and bullfights, which should belong to the category of "giving clothes" in the Ming Dynasty.

It was forbidden to wear Ming Dynasty clothes (Han costumes) in the Qing Dynasty, but the supplements of the Ming Dynasty continued to be used in the Qing Dynasty, with basically the same pattern content and slight differences among different grades. Usually civil servants: first-class crane, second-class golden pheasant, third-class peacock, fourth-class geese, fifth-class silver pheasant, sixth-class egret, seventh-class? Chen, eight quails, nine sparrows; Military attache: unicorn, lion, leopard, tiger, bear, tiger, rhinoceros and seahorse. Besides, censors and exhorters are arrogant.

The crane in front of Lin Zexu's clothes shows that he is a civilian.