The big difference between the ancient Iranian culture and current Iran was the use of technology and its ethics and culture. In the past, the invention of any cultural technology has been based on the optimal use of human rights and nature.This is a beautiful example of this culture that made it a trick:
The culture of endowed water technology to the benefit of the people. In the direction of this beautiful culture, there have been occasions of endowment that represents the peak of the humanity of these elders. One of these endowments is the waqf of the pot that devotes a large number of empty jars alongside the stairs of the water storage.
In this way, children who fell on the dark staircase of these magnificent monuments, and their cans were broken, could remove another jar and feed their family.