Emergency hedging refers to an act that, in order to protect the state, the public interest, the person, property, and other rights of yourself or others from the dangers that are occurring, must not be used to damage another minor legitimate right. Which of the following situations are classified as emergency hedging. ["Du was chased by a crazy dog on the street, and in a hurry, opened the door of Liu's house by the road and rushed into the house.", "Li Mo, a fire brigade of a county fire brigade, was fighting a fire in a villager's house. He was burned because he had not entered the house to rescue Li's son.", 'On the way to work, Wang rescued a raped girl and was attacked by a gangster. Wang wang punched the gangster and killed him on the spot.', 'The storekeeper was threatened by the gangster, opened the warehouse door lock, and let the gangster snatch more than 4,000 yuan of goods from the factory.']