Andy Lau promoted the film, 'Blind Detective', with Sammi Cheng Sau Man and director Johnnie To Kei Fung at the Shanghai International Film Festival two days ago.According to an article in hktopten, although 'Blind Detective' had decent response from its Cannes Film Festival screening, his other recently released movie, 'Switch' received the opposite. Many online had slammed 'Switch' as a rotten film. Andy Lau was asked about poor reviews received by 'Switch'. To this, he smiled and replied, "I have a lot of flaws, film selection is one of them."I am the type of person who overestimates my own vision, thinking that many movies in my hands would become good. Next time I will perform a little better, sorry, sorry!"Andy Lau said that he would learn from his failure and hoped that individual cases like 'Switch' would not affect 'Blind Detective's' box office takings. "I hope everyone would keep them separate. I performed in Switch, which had nothing to do with other people or movies. I don't know how much of an impact it will have, which is something that I have no way to think of."