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Regional technology characters (TCs) are studied in this paper to find whether innovation in Chinese cities leads to technology converging, or technology divergence, in both the intra‐city and inter‐city scales, with which regional economic development strength may be better explained. Based on a literature review on the subject, a two‐dimensional research framework and relevant technical lens are designed to clarify TC in cities composed of parameters on Technology Strength (TS) versus Technology Angle (TA). By applying Principle Component Analysis, a technical lens is made possible based on extracted parameters on three integrated technology dimensions for measuring TSs and TAs over 117 Chinese sample cities with invention patent data covering 21 technology field between 2005/2006 and 2015/2016. Technology convergence versus divergence are examined for 28/24 sample cities beyond average score, and the research findings indicate that technology divergence in Chinese cities can be confirmed at the inter‐city level, even partially at the intra‐city level. This finding holds for most sample cities with fairly large and modest TSs, while intra‐city technology converging is significant, especially for larger sized TS samples, however they also differ on different dimensions. This may imply that urban economic development in China is technical based and differentiated. [ABSTRACT FROM AUTHOR]