Chapter IV is the study of the ECI factor and its index system. It explains the course of how to gain the index system of the ECI and its scientific basis. This chapter is the core part of this study.
Chapter IV is based on the "South China" factor in this particular area to study the regional context of the residential buildings the appearance of morphological characteristics.
第四章是基于“我国南方地区”这个特殊的地域因素，研究地域性背景下的居住建筑外观形态特点。
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Part IV further analysis of audit risk factor, the establishment of the audit risk model.