Fountains originated very early, and were built in the famous hanging garden of Babylon around the 6th century BC.


    In ancient Greece, in order to beautify the environment, the spring of drinking water was gradually transformed into a decorative spring.


    This was the fountain technology of the early days.


    Murphy''s physics is not good, but roughly remember that the fountain seems to use the siphon principle, or the weight of the water itself through a special pipe from high to the bottom of the artificial fountain. At present, the urban beautification of Athens mainly focuses on road cleaning and drainage planning. Although Murphy has always been interested in creating one or two fountains in places like the central square of Athens.


    But he was not proficient in this, and as a lord, he did not have the time and energy to do these trifles.


    ………………


    The pool in the governor''s house is about 30 meters long and about 20 meters wide.


    At first Murphy intended to transplant some beautiful aquatic plants, but now it seems that they are not.


    Although the pool built in the backyard of the governor''s mansion is not stagnant water, there is only one underground water exchange channel. The water is drawn from the upstream of the moat. The domestic water of the whole Athens city is mostly planned based on the moat, which takes water from the upstream and then discharges sewage from the downstream. The domestic sewage will flow down the nidoria River to the sea.


    In fact, in such an era, the so-called "sewage" does not hold water.


    Because only the demand of domestic water can not meet the standard of sewage, and most of the domestic water is consumed in plant irrigation.


    In the era of no industrial pollution, the river water is clear.


    "How did you do it?" Murphy asked in amazement, looking at the fountain about one meter five high.


    The pool has nothing but a channel for changing water. Obviously, such a fountain is not made by physical means. Instead, it uses some mysterious power of the world, such as elements!


    The mermaid swayed in the pool, and she opened her hands to let the clear spring fall on her.


    When her eyes fell on Murphy, she just gave a light smile and pointed the marble and shells in the pool with her long white fingers.


    The marbles were originally intended to be transported by Murphy to send craftsmen to sculpt some gorgeous decorations.


    "Shells?" Murphy was stunned. He knew that the magician needed good parchment and many precious props to release the spell. But I didn''t expect that the mermaid would use shells!


    But then he also suddenly.


    In the sea, I''m afraid there are not many things that can be used as casting props.


    Shells are obviously quite common and easy to find.


    "Sister Helen asked me to pick up the shells." Behind Murphy came the excited laughter of lingdang. Maybe it''s because Murphy dotes on her. This little girl is very brave. She is the power of the governor''s house! Let me boil!)