先破后立 meaning in Chinese

destroy first and then establish; destruction before construction

This paper starts with interrogatory with capm ; analyzes the most basic risk concept , the risk expression method ; clarify the concept of systematic risk with idiosyncratic risk ; questions about marketing portfolio , diversification investment . then , we accept the capm as a reasonable first order approximation
本文的思路是先破后立,将研究的起点放在对capm的质疑上,从分析最基本的风险概念、风险的表示方法入手,层层抽丝拨茧,对系统性风险与非系统性风险的划分、市场组合、组合投资等概念提出疑问。