Simplify the following text for a Grade 7 native English-speaking person.
Original: Icing in ice hockey is a rule the happens when a player shoots the puck across at least two red lines , the other team 's goal line being the last , and the puck remains untouched but it is not icing if the player shoots the puck from behind the halfway line of the ice into the goal .
Simplified: Icing in ice hockey occurs when a player shoots the puck across at least two red lines , the opposing team 's goal line being the last , and the puck remains untouched . It is , however , not icing if the puck is shot from behind the halfway line into the goal .