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戴天理不知不觉成了统帅一帮的帮主，而在之后的混乱年代里，他更将凭借手中的打狗棍谱写一段热血刚直的英雄传奇……看着四个孩子，白胖子乐得眼睛眯成一条缝。Because ConcreteMediator controls centralization, it turns the complexity of the interaction into the complexity of the mediator, which makes the mediator more complex than any ConcreteCollage.1. Intent Attribute板栗听了哭笑不得，这个他倒从没担心过——晓得妹妹不是那没出息的，他不过是担心妹妹冻病了。1. The sender knows the first receiver in the chain and sends the request to this receiver.For example, Xiao Hong recently saw a pair of shoes on Taobao. But after contacting the seller, Only to find out that these shoes were sold out, But Xiao Hong likes these shoes very much, So contact the seller and ask when the seller will have the goods. The seller told her that it will take a week to have the goods. The seller told Xiaohong that if you like, you can collect our store and inform you when the goods are available. Therefore, Xiaohong collected the store, but at the same time, Xiaoming and Xiaohua also liked the shoes and collected the store. They will be notified in turn when the goods arrive.