正文 第九十四章 通关(第1页/共3页)
结果是，1032。
最后的最后，就是最简单的“加减法”了，把两次摆出来的乘积结果上下两行相加：5150+1032＝6192。
向重用手指沾水，用阿拉伯数字的方法，偷偷在一边早已算出了答案，只是想核对一下，用“筹策”算出来的，是否准确。
结果令他无比佩服：一点差错也没有，心想：“这古人还真是牛啊！”
人有两只手，十根手指，所以计数也天生就是“十进制”，世界上绝大多数的早期人类，都这样。当然也有例外，有些地方热，赤足机会多，那些人的祖先，也就连脚指也一起算上，创造了“二十位进制”，但绝对是少数。
昝夷先生哪里知道向重还会以水为器，暗自偷算，另有一套更先进的算法，只是惊诧于这孩子，学得太快，简直不知道，后面再教点他啥好了！
广康教授古琴，需要学者有一定指力，而向重实在过于年幼，小手稚嫩，不堪弦力，就改授他学习吹埙，从最简单的四孔鱼形埙学起。
这种古埙，纯土炼制，薄胎空心，胎体厚度大概只有3毫米，真不知道里面的中空，还要平滑，满足音色的要求，是怎么挖出来的。
整个埙只有鸭蛋大小，象一只气鼓鼓的河豚鱼，鱼嘴就是吹奏者的嘴唇吹气处，鱼身分正、反两面，正面刻画有鱼鳞，反面刻写着篆体器名“煌鼓”，在“鼓”字的右下角，有一个孔洞；正面鱼眼的两个位置，是同样大小的两个孔洞。
吹奏的时候，把鱼竖起来，和这只鱼嘴“嘴对嘴”，两手相拱共持，呈包裹姿势，手势中的两手食指，就正好可以用来封堵鱼眼的孔洞；而右手的大拇指，则刚好可以用来堵反面那个“鼓”字右下角的孔洞。
就这样，一共就一张嘴，配全三根手指：左右手的两根食指和右手的大拇指，就可以吹奏象模象样的曲子啦！
向重很喜欢这个“胖河豚”，尤其喜欢对准鱼嘴时，吹出的那种类似人声，浑厚、呜咽、哀婉、如泣如诉的声音质感，一吹起来，就有一种能瞬间换境，仿佛闭上眼一吹，就身处胡风边塞，茫茫大漠了，那种天生自带的苍凉感、孤寂感，就会由然而出，不用太复杂的技巧，只要一声吹响，就足以令游子落泪、侠客垂刀。
就是这么有魔力的乐器，广康先生特地让向郑以古琴曲相配，进行了示范吹奏，调子很简单，一埙一琴，两相吹奏，时而对话，时而和声，就像是两位贤者在讨论高深的学问一般，让人听上去，不由地会联想出很多情景：埙能表现出战马长啸，而琴则是被马踏过的千山万水、无尽沟壑……曲声入向重之耳，音量很小，但并不妨碍他欣赏出其中之妙。
虽然只有四个孔，却有很多的吹奏技巧：比如说嘴部的吹气
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