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常德花山脚下的渔樵村，有一口丝瓜井，相传井中有一根神奇的金丝瓜，所以得以井水常年不竭，甘甜可口。丝瓜井就在刘海家的屋场，出于对金丝瓜的觊觎，刘海的伯父刘振宾不顾亲情，想尽办法要将刘海和他目盲的母亲赶出刘家屋场，霸占丝瓜井，从而获得金丝瓜。由于利欲熏心，刘振宾居然贡拜恶灵穷奇，哪晓得穷奇本身也对金丝瓜垂涎已久。住在花山的九只狐仙还有金蟾，因为偶然的际会，更因为命运冥冥的安排，卷入了这场争斗。而九妹胡秀英，在与刘海经历了一系列的误会和磨难之后，终于合力战胜了邪恶的力量，并结为眷侣，成就一段美好的爱情传奇。这样他就没有回头路走了。EV + is used in typical underexposed scenes (there are many areas in the bright part of the object, such as backlighting, water surface under strong light, snow scene, sunrise and sunset scenes, etc.), and EV-is used in typical overexposed scenes (there are many areas in the dark part of the object, such as dense forests, objects in shadows, close-ups of black objects, etc.).Responsibility chain mode-A request needs multiple objects to process, thus avoiding the coupling relationship between the sender and receiver of the request. Connect these objects into a chain and pass the request along this chain until an object processes it. The specific structure diagram is as follows: