Water lanterns are originated from a legend that the drowned persons -ghosts who wanted to come back to the human world to meet their offerings can find their ways throng the light of water lanterns their offering released. Now people release them to memorize their predecessors and hope to have good luck all the year in health, prosperity, love and etc. After some ceremonies, the local folks will light up the lanterns and put them on water to let them float. With the float of lantern, people may pray what they wish. These lanterns can be released on Halloween, Easter day, New year, or other festivals.