This weekend marks the end for the old-school (by club standards) China Club. Though it lost some of its luster since moving to Times Square from the Upper West Side in 1998, the 47th Street mainstay still managed to consistently attract a crowd. Nevertheless, business is business. So China Club's owners will shut its doors Friday night and reopen them on Saturday as Opera, with a new look for the dance floor. Meanwhile, its Jade Terrace is also being retired and renovated, and will reopen with a new yet-to-be-decided name once the weather gets nicer (268 W. 47th St.; 212-398-3800).