Scene hook, letter of trust. According to the inquiry letter community network, the visual hammer of the language nail comes from the visual hammer, and the next sentence of the visual hammer of the language nail is the scene hook and the letter of trust. Visual hammer is used for oral communication, and visual hammer is used to make everyone remember. The author of "Hammer of Vision" is Alice, the global president of Rees Partner Brand Strategy Consulting Company, and an outstanding successor of positioning theory. The book was published in April, 20021.