Last year, the major problem/theorem of Elliott classification program was completed. It took almost a half century to reach the current state of art. As an outsider of this development, sacrificing the details and rigor of statements I summarize the highlights of the main result. I must confess that I yet read Elliott, Gong, Lin, Niu’s 2015 paper which is 283 pages long and Tikuisis, Winter, White’s Ann. of Math paper which is also 48pages long. However, the strategy to attack this problem has been known since 2010. So I may explain the strategy and the final story.