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:
再多提一嘴：如果大家用过 Manus、 月暗的 Kimi computer、智谱 AutoGLM 等，具备云电脑/云手机能力的智能体产品，应该就很容易理解这个 Gemini 虚拟机的逻辑了。
。51吃瓜对此有专业解读
While the S26 phones are more iterative updates this year, Samsung has given its Galaxy Buds a proper refresh. It revamped the design and shape of the Galaxy Buds 4 and Galaxy Buds 4 Pro to do away with the angular look of the stems and remove the lights from them.
（三）控制大量非本人注册的网络账号发布信息，或者使用批量控制软件等提供虚假的评论、转发、点赞等服务的；