I can't answer that question. Contraception injections were usually a plot setting rather than the main plot of a novel. The plot of a novel should be set according to the theme of the story and the development of the plot. If you need more information about the male protagonist of the novel, please tell me what you want to know. I will do my best to help you.
The protagonist of the book,"The General's Favorite Wife, Xiao Meng," Sang Ge had a needle called the Gentleman's Needle. , I hope you like this fairy's recommendation. Muah ~
It could also be a term for a type of alien technology. Maybe the aliens use 'needle cast' - like devices for communication or as a form of energy projection. In some sci - fi stories, alien technology is often described in terms that are related to natural phenomena on Earth, so 'needle cast' could be used in this way to make it seem both familiar and strange at the same time.
The 'needle in a timestack short story' might be about a difficult - to - find or elusive element within the context of time. It could involve a search for a particular moment or event that is crucial yet hard to pinpoint, much like finding a needle in a haystack but within the framework of time.