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1905年，日俄战争以日本战胜结束，这场发生在中国东北的两国战争，极大的膨胀了日本军国主义者的野心！他们利用战后取得的满洲铁路控制权，加快了对中国东北的侵略步伐。 平民子弟张天海，生长于辽西大地，依靠协助东家贩马为生。一次，从蒙边城贩马返回的时候，与满铁守备队的日本士兵发生冲突，后被诬陷通匪，不得不逃离家园躲到蒙边城谋生。 多年的艰苦放牧生活，磨练了张天海性格的同时，也让他看明白了日本人对满洲大地的狼子野心。 九一八之后，张天海依然回到辽西故乡，并且带着自己的兄弟耿金锁、蓝玉奴等人，组建一支抗日队伍，并且加入了黄显声将军组织的抗日义勇军。 关东军对绰号“老北风”的义勇军异常痛恨，为了消灭张天海这支神出鬼没的队伍，不惜花重金收买，设陷阱伏击，并且抓住张天海的母亲和妻子为人质，但日本人显然低估了东北人身上的血性！If you open multiple files at the same time, it is possible to chat with team members in multiple chat rooms. If you want to distinguish which chat records are related to the currently edited mind map, select "Current Map Message".Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:1. Credibility of information sources1.0-3.0顾涧一面派人送信去岷州府，请巡抚大人和知府大人协助。