关羽的出生与成长
在中国历史上，蜀汉的武将关羽被誉为“义薄云天”的英雄。他的出生地是河南郡（今河南省孟州市），他出生于公元160年，是一个普通农家子弟。在他年轻的时候，他曾经做过农民，但由于其身材高大、力气足和勇敢无畏，很快就吸引了当地人的注意，并被选入曹操部下。
关羽加入曹操
在曹操手下，关羽表现出了极高的军事才能。他参与了多场战役，其中最著名的是赤壁之战，这场战争中，他凭借自己的勇猛和智慧帮助曹操击败了孙权。但是在之后的一些战役中，由于个性中的刚愎自用和对待同僚不够尊重，最终导致他与 曹操产生了矛盾，最终选择跟随刘备。
关羽与刘备的结盟
在公元220年，魏文帝曹丕篡夺皇位后，刘备为了保住自己的一部分领土，便向南逃亡，在此期间他得到了张飞、黄忠等一批忠诚的将领支持。同时，他也寻求到了天下的另一位英雄吕布，但是吕布因为私心而拒绝合作。这时，一直想加入强大的力量却又不愿意背叛旧主的心怀贤明且胸怀广阔的人物——诸葛亮出现了，为刘备提供了一份可行性的策略计划。
关羽北伐之路
在诸葛亮策划的大业里，关羽担任前线总指挥，以迅雷不及掩耳之势攻占荆州，并成功收复失地，对抗东吴展开了一系列连续胜利。而这段时间也是他的封号“先锋”得以树立，因为他的英勇善战让人敬佩，让人感动，也让人难以忘记。在这个过程中，他还建立了一支庞大的护卫队伍，不仅包括士兵，还有许多平民百姓，他们都非常崇拜并追随着关羽。
关羽最后的悲剧
然而，当时局发生变化，大armies of Shu-Han were unable to withstand the pressure from the armies of Wei, and after a series of defeats, Liu Bei was forced to retreat southwards again, leaving behind his sworn brother Guan Yu in charge of Nan commandery (now Nan County). But this time around, he found himself surrounded by enemy forces and eventually fell into a trap set by Sun Quan's generals.
In 219 AD, Guan Yu was executed at Longyuan Pavilion on the banks of the Xie River in present-day Jiangsu Province for his perceived disloyalty to Liu Bei and failure to fulfill his duties as a general. The execution was carried out by Lü Meng who had been sent by Zhuge Liang with orders from Sun Quan.
Guan Yu's death marked an end to an era that saw him rise from humble beginnings as a common soldier under Cao Cao's rule, through his unwavering loyalty and bravery alongside Liu Bei during their journey together against all odds; ultimately culminating in one tragic fall at the hands of those he once called friends - it is said that even now in heaven above there is no peace for those who dare not speak truthfully about their deeds upon earth; let us remember him forever!