I think there's a cream for that....

what are the tools were used to build the rice terraces

Banaue Rice Terraces

The Banaue Rice Terraces are approximately 2,000 years old and cover an area of about 4,000 square miles. They are considered a UNESCO World Heritage Site and are often referred to as the "Eighth Wonder of the World."

The Banaue rice terraces can be found in the province of Ifugao, island of Luzon in the Philippines. It would take a 9-hour bus ride from Manila to the magnificent terraces.
Banaue Rice Terraces are located in Philippines.