In August 1521, the conqueror Hernán Cortés took, looted and destroyed the Aztec city of Tlatelolco. After the conquest, the Aztecs returned to urban waste and adapted to the strict standards and limitations imposed by the conquerors.

But in the last archaeological campaign conducted by the National Institute of Anthropology and History of Mexico (INAH), human sacrifice tests have been found after the conquest and other signs. This shows that, despite being profoundly forbidden and punished, the Aztecs tried to maintain their old religions and traditions.