中古精（洪音）知庄章组声母的演变是汉语方言发展过程中一类重要的语音现象，也是在研究豫北晋语过程中不能回避的语言难点。以晋语邯新获济小片中的沁阳方言为例，发现在沁阳方言中精（洪音）知庄章组声母的发展主要经历了：高本汉时期的二分型—老派的合一型（ts组）—中派的过渡型（ts/tʂ组）—新派的合一型（tʂ组）。此局面主要受到双重作用的影响，一方面是来自内部因素对演变的促进作用，另一方面是来自语言接触而引起的变异。

The evolution of “Jing Zhi Zhuang Zhang”（精知庄章） initias is an important phonetic phenomenon in the development of Chinese dialects, and it is also a linguistic difficulty that cannot be avoided in the process of studying the Jin language（晋语） in northern Henan. Taking the Qinyang dialect as an example, it is found that the development of the vowels of the “Jing Zhi Zhuang Zhang”(精知庄章） group in the Qinyang dialect has been experienced: Gao Benhan divided it into two categories. By the twenty-first century, it had undergone a change from dichotomy to unity. This situation is mainly affected by a double impact, on the one hand, from the promotion of evolution by internal factors, and on the other hand, by the variation caused by linguistic contact.