《太平广记·卷五十五·神仙五十五》
两个人互相看了看，惭愧而又惊骇，然而又想靠多写来难倒他，就赋写两句又交给侯喜，写得是 大若烈士胆，圆如戴马缨。 
二子相顾愧骇，然欲以多穷之，即赋两句以援喜曰： 大若烈士胆，圆如戴马缨。 
The two looked at each other and were both ashamed and a little shocked. But they wanted to continue writing to stump Mi Ming, so they wrote two sentences and handed them to Hou Xi: "As bold as the gallbladders of great men, as round as the tassels on a horse's cap."
<s>[INST] Kindly elucidate the central themes in this passage in English: 二子相顾愧骇，然欲以多穷之，即赋两句以援喜曰： 大若烈士胆，圆如戴马缨。  [/INST] The two looked at each other and were both ashamed and a little shocked. But they wanted to continue writing to stump Mi Ming, so they wrote two sentences and handed them to Hou Xi: "As bold as the gallbladders of great men, as round as the tassels on a horse's cap."</s>
Kindly elucidate the central themes in this passage in English: 二子相顾愧骇，然欲以多穷之，即赋两句以援喜曰： 大若烈士胆，圆如戴马缨。
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The two looked at each other and were both ashamed and a little shocked. But they wanted to continue writing to stump Mi Ming, so they wrote two sentences and handed them to Hou Xi: "As bold as the gallbladders of great men, as round as the tassels on a horse's cap."
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