Hi guys, sorry if the question seems too basic or simple, but i cant seem to grasp the concept about pressure here. say, a cylinder filled with water; ------------ °A °B ------------ at point A, the liquid pressure is lower than it is at point B , as there's a difference in pressure between the two region, why wouldn't the water at region B flows up to region A due to its higher pressure ? from what i've read in my reference book, water from a high region (reservoir ) flows down to a lower region(ground level) is able to flow back up to water tanks (above ground lvl) at our houses due to the high pressure at lower region when water flows down from reservoir at a great height, in accordance to p=ρhg have i got pressure and force mixed up ? why wouldn't water at the bottom pushes upward in a cylinder/bottle due to greater pressure under it ? at the same time, why would water flow upwards to water tanks located above the ground lvl? is it because of the great height difference between reservoir and ground level hence the great pressure? how does water remain still in a cylinder with all that pressure difference? sorry again for my grammar and phrasings , and thanks in advance for all the help !