It seems Hong Kong actress Diana Pang has a high threshold for pain -- judging by her ability to handle freezing-cold temperatures while she was out shooting her new film, On the Ni Nan Wan Frontier.Before production for the film, which she wrote, directed and starred in, began, Pang went to live in Nan Ni Wan in order to better bring her on-screen character to life.Mingpao reported that at the shooting of a scene in a glacier plateau, where temperatures dipped to minus 30 degrees Celsius, over 100 members of the production team succumbed to the harsh conditions except Pang."I have Hong Kong filmmakers' tough spirit, in the past many people misunderstood Hong Kong filmmakers. They feel that we only know how to make absurd comedy and act like big shots. Actually we are very professional and are very tough", Pang said.That was further backed up by testimonies of her crew that she did not act upset nor throw a tantrum while on set. She was even dubbed 'Sister Fairy' and 'Brother'.On the Ni Nan Wan Frontier will open later this year.