Simplify the following text for a Grade 9 native English-speaking person.
Original: To get into the Labyrinth , Percy has to find the symbol of Daedalus , the Greek letter delta , ( Î '' ) on a passageway , touch it , and then enter the Labyrinth .
Simplified: To get into the Labyrinth , Percy has to find the Delta Symbol ( Î '' ) on a passageway , touch it , and then enter the Labyrinth .