There are four different types of writing: expository, persuasive, descriptive and narrative. While one could say that descriptive could describe a particular subject, craft, or occupation, descriptive writing is more for describing a character, event, or special place. Persuasive is trying to persuade your audience to think one way, and narrative is used to tell a story. Expository writing is used to communicate specific information about a particular subject, craft, or occupation.
It sounds like Nantai doesn't want anything to do with his old culture, and he wants to become just like the modern white men. He is very attached to the ways of them.
In “I Wandered Lonely as a Cloud”, Flowers are spring flowers and Wordsworth uses them as a physical thing that refers to an idea or emotion for youth. It is romanticized but in old age the mind dwells mostly in the past, which the poet does at the end of the poem. Although on the nature of the poem it is in reality about growing old and having memories of youth.