2026-02-28 00:00:00:0李培禹3014274410http://paper.people.com.cn/rmrb/pc/content/202602/28/content_30142744.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/28/content_30142744.html11921 秭归有“伦晚”（遇见）
More on this storyDredged sediment to be used as coastal buffer
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The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
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