黄侃提出“有条理系统始得谓之学”的理论，制作了把文字、义理、史事、制度结合起来研究的条例。吴承仕、黄节、程树德、刘赜结合历史背景对于有一定的系统联系的字词作贯通的研究。沈兼士揭示语源包含的共同的意义特点。杨树达探讨形声字记录语源时在形义构造上的规律。 Huang Kan put forward the theory that “a well-organized system starts to be called,” and made regulations that combine words, justice, historical events, and institutions. Wu Chengshi, Huang Jie, Cheng Shude, Liu Jiao combined with historical background for a certain system of words to make a penetrating research. Shen and others reveal the common meaning and meaning contained in the etymology. Yang Shuda explores the regularity of the tectonic formation when phonetic transcriptions are recorded.