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The second classification principle of organisms is the lineage classification principle aiming at establishing evolutionary lineage. The classification method following this principle is called lineage classification. The representative of pedigree classification is "branch systematics". It advocates that the branches in evolution should be taken as the criteria for identifying and distinguishing classification units and the basis for determining the pedigree relationship of each classification unit. The so-called co-ancestral proximity (similar to a group of people being a grandfather) is used to measure the genetic relationship between different taxa and determine their position in the pedigree. The classification system finally established is an evolutionary pedigree reflecting the history of phylogeny, which is a deeper description of biological relationship. In other words, the basic principle of pedigree classification is that the classification system conforms to the evolutionary pedigree. Pedigree classification is only applicable to organisms and cannot be used for abiotic classification.电影以鹧鸪哨、陈玉楼探秘瓶山半个世纪后的湘西为背景，讲述了自龙岭迷窟回来后，胡八一为救身中剧毒的大金牙，带领摸金铁三角二入湘西瓶山，寻找江湖传说中消失已久的六翅蜈蚣，获取救命内丹的故事。There is not one of the strongest superb workmanship, because there is confusion and dizziness in front of it. This perception, combined with poison series, can hit ultra-high damage. In the later period, the starting hand of 2,000 to 3,000 debuff goes up and directly dismembers the opponent.　李敬文见她发呆，凑近她，捏着她下巴小声问道：你生气了？小葱无力摇头。单身父亲宋大年是一名出租车司机，为了给儿子更好的生活条件，他在下班之余也会接一些私活。在一次做酒后代驾的时候发生了意外，宋大年撞死了人。他对受害者家属十分愧疚，除了经济赔偿之外也一直努力地对受害者家属进行补偿。他在生活中对受害者家属翠翠关怀备至，甚至在翠翠早产后需大量输血时挽救了翠翠母子的性命。赔偿后宋大年的日子过得十分艰难，失去工作，到处打工。在最艰辛的日子里，前妻一家以及朋友都对宋大年伸出了援助之手，也正因如此，无论多辛苦他也没放弃过对生活的希望。翠翠也渐渐地被宋大年的真诚所感动，原谅了宋大年。最后，死者被发现原是自杀，洗清冤屈的宋大年和翠翠确立了感情。每一个人都对生活抱有了真心与善良的态度，人们渴望幸福，守护幸福，最终大家都获得了幸福