What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
习近平总书记指出：“健全党统一领导、全面覆盖、权威高效的监督体系，是实现国家治理体系和治理能力现代化的重要标志。”数字纪检监察体系以数据、算法、算力的有效聚合驱动纪检监察工作力量整合，打破传统监督的思维定式、路径依赖和机制障碍，为纪检监察工作装上“智慧大脑”。
。关于这个话题，夫子提供了深入分析
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