The poem compares the poet's beloved to a summer day; the beloved is, however, "more lovely and more temperate". Summer can be shaken by rough winds, and its heat may be excessive. The biggest problem with summer, however, is its fleeting nature; like all seasons, it will pass more or less soon, and the speaker does not wish his beloved's beauty to fade. His solution is stating that just as his beloved is "more lovely", his beauty will outlive summer thanks to the poet's verses. "So long lives this", says the poet, meaning the poem, the beloved's beauty will survive, and his "eternal summer shall not fade".
All of them except “Details are not important in reading”
C hope this helps you in the long run
They explain through storytelling how things came to be or how the world came into existence.