How did Hernando Cortes get to Aztec city?

He was using a Aztec woman named Malinche. Then Malinche led Cortes and his men to the Aztec City, Tenochtitlan. Cortes was determined to break the power of the Aztecs and took Moctezuma hostage. The Aztecs then called Malinche a traitor. Which then they battled, the Spanish had an advantage in battle because they had better weapons and horses. The Spanish had wiped out millions of Aztecs,which led to the end of the Aztecs.