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Spend your spare time on upgrading your own quality-such as reading plan, skills training, etc. The poverty of the poor is often a double deprivation: lack of money and time. Therefore, we must learn to plan our spare time and, when necessary, learn to replace time with money like Ma Jun.娘……杨长帆眼眶酸红，一起走吧。CW又一次一口气续订多剧，这次共13部，包括《超级少女Supergirl》（S6）。Fix a bug影片《嗨起，打他个鬼子》讲述的是1938年，国民党南京政府西迁重庆后，贵阳成为战略重地，日军为打通西南通道，派遣小分队到贵州腹地进行情报窃取工作，从而引发贵州少数民族英勇抗日的故事。对探索神秘充满兴趣的主角龙崎翔在偶然的一次遇见了会说话的弹珠人，并带领他走进一个神秘的世界……One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.