It is expected that scholars will continuously strengthen the depth and breadth of theoretical research on RIS, and provide a higher theoretical upper bound for the engineering application of RIS. While making breakthroughs in academic research, it has also made rapid progress in engineering application research and industrialization promotion. This paper will provide an overview of RIS engineering applications, and make a systematic and in-depth analysis of the challenges and candidate solutions of RIS engineering applications. Future trends and challenges are also provided.

翻译：预计学者将不断加强关于RIS的理论研究的深度和广度,并为RIS的工程应用提供更高的理论上限。在学术研究取得突破的同时,它还在工程应用研究和工业化促进方面取得了迅速的进展。本文件将概述RIS工程应用,对RIS工程应用的挑战和候选解决办法进行系统和深入的分析。还提供了未来的趋势和挑战。