No spoilers means that the plot is not allowed to be revealed in advance. Origin: The phrase "Spoiler Alert" originated from European and American Internet news group forums in the 1990s. Preliminary statistics from the media show that only since 2008 has the word spoiler been used on a large scale in online and media reports. Spoiler hazard: material that has already been filmed has been cut or completely scrapped or reshot. Moreover, it will create a bad impression on those related to the work, damage the reputation in the circle, and be suspected of unfair competition. Don't be too voyeuristic. If you stab someone you love with someone else's knife, you will also be the executioner.