The best way to conform to the opening and closing principle is to provide an inherent interface, and then let all classes that may change implement the interface, allowing fixed interfaces to interact with related objects.
At that tail of the warhead, the drag armour-piercing firebomb is filled with a drag agent and a fireagent, Under the pressure of propellant propelling warhead, it will spontaneously ignite to produce open flame, So it can break through the oil drum and ignite or detonate the gasoline. However, the old-fashioned traced armour-piercing firebombs have obvious trajectories due to traced light when they are launched. Therefore, it is very easy to expose oneself while pointing targets to friendly forces. Therefore, the new tracer armour-piercing firebombs now equipped all start to burn and emit light only after the projectile flies out of the muzzle for a certain distance (the generally set safe distance is 100 meters, which makes it impossible for the enemy to judge the firing position with tracer ammunition, while targets within 100 meters do not need to be indicated by tracer), The principle is generally to ignite the tracer and combustion agent carried by the projectile by accumulating the heat generated by the warhead's friction with the air after flying for a certain distance to a certain extent.
一个想要挣脱父权控制的青年，在一次争执中失手杀死了同村的痞子，被迫逃亡。他没有想过会用这样的方式逃离安逸的生活，离开之际却惊人的发现宿命早已将他和专制的父亲紧紧连接在一起，走或留他都将失去一切。
热爱制作美食的少女叶佳瑶被土匪抢上黑风寨，并嫁给了黑风寨的三当家的夏淳于；而夏淳于的真实身份是靖安侯世子爷，朝廷派出的卧底。黑风寨被攻破后，两人因误会而失散，叶佳瑶女扮男装来到金陵，凭借精湛的厨艺打下了金陵的美食江山，成为金陵饮食界的霸主。而夏淳于与叶佳瑶在黑风寨失散后才发现自己早已陷入这段感情，两人在金陵重逢之后，夏淳于克服了重重困难，与叶佳瑶终成眷属。婚后，侯府卷入了太子与烨王的夺嫡之战，在夏淳于夫妇用尽浑身解数与烨王周旋，终于辅佐太子登上了皇位。
24. Code:-; -_-.
State mode: Pay attention to encapsulating state-related behaviors, support state changes, and change its behavior when its internal state changes by encapsulating object state.
3.12
Nate Ford(蒂莫西·赫顿 Timothy Hutton 饰)曾当过保险调查员，为自己的老板挽回过数百万美元的损失，是个忠心耿耿的雇员。但是有一天，他发现老板宁愿让自己的儿子去死也不肯兑现理赔，意识到自己与这个虚伪的行业根本就格格不入。 辞职之后，Nate戒掉了酒瘾，与盗窃专家Parker（贝丝·涅斯格拉夫 Beth Riesgraf 饰）、互联网专家Alex（阿尔迪斯·霍吉 Aldis Hodge 饰）、 超级壮汉Eliot（克里斯蒂安·凯恩 Christian Kane 饰）、职业骗子Sophie（吉娜·贝尔曼 Gina Bellman 饰）等四个各具神通的人组成了一个小团队，发誓保护那些受到社会与强权主义压迫、得不到公正待遇的人。
家住北京城的肖家家境殷实，平常无奇。肖父（刘子枫 饰）是一个退休的中学校长，肖母（童正维 饰）则是一个街道上爱咋呼的老太太。老两口的生活平淡，悠闲自在，儿女们也多有出息，为邻里羡慕。不过，随着大女儿肖云楚（赵明明 饰）从国外归来，麻烦也接踵而至。
却始终不愿意放低姿态与韩信沟通，只能自己苦苦面对了。
In this case, the system needs to be restarted once, and the subsequent installation process will be automatically carried out within one minute after the restart.
北京高科技公司的青年才俊盛一朝为人正直，也因此得罪了老板，被炒了“鱿鱼”。心情郁闷的他因为酒后开车误撞了人，一念之差下，开始了逃亡香格里拉的旅程。 在逃亡的过程中，盛一朝不幸跌落猎人设下的陷阱，幸好被善良的宝石商人潘基业所救。盛一朝非常感激潘基业的救……
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。
大明永乐皇帝病重，锦衣卫副指挥使李毅，奉命护送西藏大喇嘛进京，为皇帝诵经祈福。半路遇袭，遭东厂高手伏击，拼命搏杀之际，却发现，大喇嘛是个女人。而这一切，都是锦衣卫指挥使纪纲的安排还没等李毅调查清查，之前遭纪纲陷害的解缙就离奇的自杀了，李毅背上了谋杀钦犯的大罪。
平凡女孩王有牙因身患绝症参加冬眠计划，不想阴差阳错来到了5000年后一个只有男人的世界：尼斯大陆。她的出现打破了尼斯大陆原本平和的状态。“真命天子”、第七区”的首领顾九歌相信王有牙的出现能够改善尼斯大陆只靠克隆存活的危机，将其奉为女神。对爱情充满向往的王有牙也 “企图”与顾九歌相恋，无奈从未见过女人的顾九歌根本不知如何恋爱，两人相处啼笑皆非。王有牙降临第七区一事毕竟非同小可，不论是顾九歌的死对头：ROAR团首领崇楼，还是一直觊觎第七区统治权的联盟要员贺君白，都希望能从顾九歌手中夺走王有牙，大量克隆推行繁衍政策。王有牙和顾九歌这对恋人的恋爱之路注定甜蜜而又充满坎坷。
许朝光同样怒目而视：我是逆贼。
In the historical substitution principle, the methods of the subclass to the parent class should not be overridden or overloaded as far as possible. Because the parent class represents a well-defined structure, subclasses should not destroy it casually by interacting with the outside world through this standardized interface.
The choice of stars should pay attention to the star's own image, affinity, credibility, professionalism, popularity and other factors.
