## 4 Discussion  
This paper proposes a neutral dynamic network cross-efficiency model and applies it to the assessment of the efficiency of innovation activities in China's high-tech manufacturing industry. This paper divides the innovation activities of China's high-tech manufacturing industry into the technology R&D stage and the achievement transformation stage. In order to reflect the actual delay effect of technology R&D and achievement transformation more accurately, this paper lags the technology R&D stage by 2 years and the achievement transformation stage by 1 year and utilizes the model to comprehensively assess the overall efficiency of China's provincial-level high-tech manufacturing industry as well as the efficiency of each stage. The assessment results show that the overall efficiency performance of China's high-tech manufacturing industry is relatively excellent. The overall efficiency values of all the evaluated provinces are generally close to 0.8, indicating that most provinces have achieved relatively ideal results in the overall operation of high-tech manufacturing. However, upon in-depth analysis of the efficiency at each stage, it was found that the average efficiency of the technology transfer stage was as high as 0.818216 but that of the technology research and development stage was 0.275346. This indicates that although China has made certain progress in promoting the development of high-tech manufacturing, there is still room for efficiency improvement in the field of technological research and development, and it is necessary to continuously strengthen basic research and technological accumulation. In order to realize the dual-wheel drive of technology R&D and achievement transformation, it is still necessary to invest more attention and resources in the technology R&D stage, to enhance R&D capabilities and break down technological barriers, and to promote the overall optimization from the source of the technology to its market application. This will not only help to improve the overall level of technological innovation but also win a greater advantage for China's high-tech manufacturing industry in global competition. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Hebei** & **Overall Efficiency Value** & **Stage 1 Efficiency Value** & **Stage 2 Efficiency Value** \\ \hline Full cycle & 0.807175 & 0.263308 & 0.808980 \\
2016 & 0.602637 & 0.213525 & 0.603283 \\
2017 & 0.723661 & 0.460353 & 0.724044 \\
2018 & 0.724006 & 0.445400 & 0.724327 \\
2019 & 0.620914 & 0.396470 & 0.621245 \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Overall efficiency results for Hebei Province in the two-stage dynamic network cross-efficiency model. Based on the above conclusions, combined with the development status of China's high-tech manufacturing industry, the following suggestions are given:  
(1) The government and enterprises have increased their investment in technological research and development, especially in basic research and the development of key core technologies, to ensure the effective allocation and utilization of research and development resources. Support for scientific researchers should be strengthened, the cultivation and introduction of high-end scientific research talents should be encouraged, and enterprises should be encouraged to increase their R&D expenditures through policy guidance to enhance their overall technology R&D capabilities;  
(2) The connection mechanism between technology R&D and achievement transformation should be optimized, and the lag effect between technology R&D and achievement transformation should be shortened.