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:
在外地做生意，最怕断了现金流。浙江丽水籍商人陶小军就曾遇到这样的困境。2024年，他在宁波开的超市要翻新门店、扩大规模，钱成了大问题。这时，一笔来自家乡的50万元贷款，解了燃眉之急。
Раскрыты подробности о договорных матчах в российском футболе18:01，详情可参考搜狗输入法2026
（一）设立专门机构或者指定专门人员直接负责网络犯罪防治工作，网络运营者负责人为第一责任人；。关于这个话题，旺商聊官方下载提供了深入分析
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The Royal Artillery is facing criticism after it emerged they are refusing public access to an “extraordinary object” looted by the British army in the 19th century from the Asante people in modern-day Ghana.。关于这个话题，爱思助手下载最新版本提供了深入分析