在灵谷学院的修仙之途上，基础凝气的奥秘正缓缓展开。
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当老学究介绍完课程后，执事长老匆匆而至，将一份载满希望与挑战的课程安排表庄重地贴于公告栏。“灵能锻造之术”，那是能将体内灵能化为实质武器与防具的神奇技艺，无论是灵能长剑的锋芒，还是灵盾的守护之力，亦或是灵能飞轮的灵动攻守，都让学子们对未来实战中的强大威力心驰神往。林恩灿与林牧已在心中勾勒起属于自己的独特灵能兵器模样，深知此术需对灵能精细操控至极。
紧接着，“灵脉探寻与开发”课程映入眼帘，学院坐落灵脉汇聚之所，这课程将带领众人深入山脉，探寻灵脉走向，汲取深处纯净灵力，更有天赋绝伦者可尝试开发新分支，为自身与学院灵力储备开辟新源。此消息一出，全场轰动，林恩灿与林牧对视间，志在必得的决心展露无遗，他们明白这不仅是个人实力飞升的契机，更是在学院乃至修仙界树立威望的壮举。
而公告栏底部那神秘的“灵心试炼”，如一团迷雾，引人遐思。执事长老的微笑不语，让学子们纷纷猜测，这究竟是心灵的炼狱，还是灵魂深处力量的觉醒之旅？林恩灿与林牧望着这名称，眉头轻皱，却毫无惧意，只待在这一系列课程中披荆斩棘，书写传奇。
待得知白袍长老便是执事长老时，众人皆惊，崇敬之心更盛。林恩灿笑意微绽，赞其对学院诸事洞察入微，基础凝气教学定有独特见地；林牧则挑眉，话语傲娇却难掩期待，盼其课程精彩非凡。
次日清晨，练武场阳光初照，学子们整齐列队，恭迎白袍长老。长老衣袂飘飘，步伐沉稳，登台后灵压微放，全场刹那寂静。
“基础凝气，开启修仙之门的秘钥，绝非易事。”长老声如洪钟，“凝气需心宁神静。”言罢，双手舞动，灵芒乍现，开始演示引气入体之姿与灵力运转之道。台下学子目不转睛，林恩灿与林牧亦摒弃杂念，沉浸其中，探寻双灵根修炼的进阶之法。
长老进而阐释，基础凝气首重灵气感知。世间灵气无形无质，却充盈天地。单灵根者，如木灵根修士于森林之中，对木灵气感知敏锐，仿若置身熟悉家园，极易察觉其存在。而多灵根者，如金、土双灵根修士，需在复杂环境中分辨不同灵气，建立联系，恰似在喧嚣人群中寻觅不同之人，需全神贯注，耐心非凡。
引气入体时，单灵根因仅与一种灵气相契，过程顺遂，如阀门开启，灵气依经脉畅行，几无冲突。多灵根则需同时导引多种灵气，严控流量速度，否则水火不容，如水火双灵根修士，稍有差池便致灵气紊乱，引气失败甚至伤身。
丹田凝练阶段，单灵根专注一种灵气，依法压缩提纯，似雕琢单一材料成精品，追求纯度极致。多灵根则要调和多种灵气于丹田，寻得平衡，促其融合共生，如金木水火土五灵根修士，需巧配五行灵气，成独特灵力混合体。
修炼速度与难度方面，单灵根因亲和力强，引气凝练顺遂，修炼迅速，可在基础凝气阶段快速提升实力，却易受限于单一属性，缺了灵活应变。多灵根虽修炼难度大，需兼顾多方，易出问题，速度较慢，但一旦度过基础凝气，实现灵气协调配合，潜力无限，可修炼多种功法法术，战斗中灵活切换，适应性与应变力超强。
修炼资源需求上，单灵根专注单一属性，所需资源集中，如火灵根修士在基础凝气时需大量火属性灵晶、灵草，此类资源多在火山或火脉附近。多灵根因涉及多种属性，所需资源繁杂，如风、雷双灵根修士，既要风灵玉，又要雷源石，探寻范围广，收集难度剧增。
心境修炼要求亦有不同。单灵根围绕单一属性力量理解掌控，如冰灵根修士需感悟寒冷寂静坚韧，使心境与灵气契合，修炼施展法术方能得心应手。多灵根则要包容多种属性对立统一，如光暗、刚柔并存，需保持平衡心境，避免灵气引发情绪波动影响修炼，战斗中沉稳调用不同灵力，和谐共生。
随着讲解深入，长老挥袖间，练武场幻化为灵雾幻境，人体经脉立体脉络浮现，光芒闪烁，展示灵气运行细微之处。“诸君观之，基础凝气时，灵气于经脉流转当如星河流淌无阻。遇阻则需以意念梳理，如解丝线缠绕。”长老声传四方。
林恩灿眉头微皱，思索双灵根在经脉流转中精准切换协同之法，脑海模拟先引水灵根灵气沿水脉缓行，至关键节点再引入火灵根灵气，使其交汇无碍。林牧目光炽热，紧握双拳，急切欲试，深知双灵根机遇挑战并存，基础凝气运用自如则修仙之路光明无限。
长老续言：“丹田灵气凝练至一定程度，可试小周天循环。此循环可使灵气体内生生不息，强化自身与灵气契合度。”语毕，长老灵力光芒盛极，以身示范，灵力周而复始流转，灵雾翻涌。var s = new Date().getSeconds() % 2;
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