Category IIA. Don’t even think about seeing “Lost Indulgence” if you can’t stand slow movies. It’s a claustrophobic and languorous meditation on life, lies and loss.The story follows a mother and son as they struggle to redefine their lives after the father’s taxi plunges into the Yangtze, killing him and crippling the passenger, his mistress. Mourning wife Li (Jiang Wenli) offers to take care of the mistress, Sudan (Karen Mok), and asks her to move in with her and her adolescent son Xiaochuan (Tan Jian-ci).