In summarizing the studies on meridians and collaterals in the past 50 years

the authors consider that to understand the basic meaning of Jingluo （meridians-and-collaterals） in the ancient time of Internal Classic is especially important. This paper used a research method of language-based evidence of linguistics in the retrieval

statistics

and analyzed the meaning of the word Luo-collateral in distribution

quantity

and type etc. in the book Internal Classic. The very quantitative study found that the basic meaning of Luo-collateral is a kind of Mai-meridian

referring to the three-dimensional vascular network itself which is believed to have the functions of physiology and pathology in linking

connecting

communicating

and adjusting.