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In countries lacking, children always need to spend a lot of time and energy getting water for living.
It will be a perfect way if we easily get water and play games with our companions by using a device , feeling joy and pleasure during the process of getting water.
By applying the theory of seesaw movement, we can make piston motion more effectively by activating the internal device.
Ming Chi University of Technology
CHIN WEN WU
CHIEN YU HUNG LIU CHIN LUNG