Oscar-winning director Ang Lee will be in Boston on Oct. 24 to introduce his classic “The Wedding Banquet” at the Boston Asian American Film Festival. His appearance kicks off the festival, which runs through Oct. 27.Mark Shanahan can be reached at firstname.lastname@example.org. Follow him on Twitter @MarkAShanahan. Meredith Goldstein can be reached at email@example.com. Follow her on Twitter @MeredithGoldste.