推荐回答（1个）
运用典故,简练含蓄
用典除了有加强论证的作用外,还能以古比今、借古写怀,可以使文章内容充实,联想丰富.语言简练,风格典雅.这篇序文用了大量典故来叙事抒情,有的是历史故事,有的是前人文句.而运用的手法又有所不同,有的是明用,如“冯唐易老,李广难封”；有的是暗用,如“酌贪泉而觉爽,处涸辙以犹欢”；有的是正用,如“孟尝高洁,空余报国之情”；有的是反用,如“阮籍猖狂,岂效穷途之哭”.典故的运用,加强了文章的表达效果.
·以下是详细分析
1、物华天宝,龙光射牛斗之墟.
《晋书·张华传》：张华见斗、牛二星间常有紫气,请雷焕登楼观看.雷焕说这是“宝剑之精,上彻于天”,剑在豫章郡丰城县（今属江西）.于是张华任雷焕为丰城令.雷焕果然在丰城狱的地下挖出了两把宝剑,一名龙泉,一名太阿.剑挖出之后,紫气就消失了.
两剑的夺目光芒即龙光.后来宝剑入水化为双龙.
2、人杰地灵,徐孺下陈蕃之榻.
见于《后汉书•徐穉传》.徐孺,即徐稚,字孺子.东汉时名士,豫章南昌人.家贫,常亲自耕种,德行为人所景仰.陈蕃,字仲举,东汉汝南人,为人刚正方严,他曾任豫章太守,在郡不接待宾客,只是徐稚来时才特设一榻,徐稚走后就把榻悬起来.
3、腾蛟起凤,孟学士之词宗.
《西京杂记》：董仲舒梦见蛟龙入怀,于是作出了《春秋繁露》的词；扬雄著《太玄经》,梦见自己在《太玄经》上吐出了凤凰.
4、紫电青霜,王将军之武库.
“紫电”之典见《古今注•舆服篇》吴大皇帝有宝剑六,其中第二把叫紫电.
“清霜”之典见《西京杂记》汉高祖斩白蛇用的剑,12年磨一次,剑刃锋利如霜雪般白亮.
5、爽籁发而清风生,纤歌凝而白云遏.
《列子·汤问》：薛谭向秦青学习唱歌,没有学得精髓就以为自己已经都学会了,于是向老师秦青辞行.秦青没有阻止他,在郊外为他饯行.饯行时秦轻抚节悲歌,歌声振动林木,连天上的云朵都为之停了下来.
6、睢园绿竹,气凌彭泽之樽；
睢园：西汉孝梁王在睢水边修筑的竹园.孝梁王喜欢招引文士,他常和枚乘、司马相如等文人在园内饮酒赋诗.
彭泽之樽,陶渊明曾任彭泽令.他之前十分贫困,当彭泽令后有所改善,能“有酒盈樽”.
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