Well, 'true hard end of story' might refer to that point in a narrative where everything stops completely and there's no chance of a sequel or further development. Say in a detective story, when the killer is caught and there are no more mysteries left, and it's made clear that this is the final state of affairs, that could be a true hard end of story.
"Difficult to coax: The End" is a novel written by Zhu Yi, published by Jiangsu Phoenix Literature and Art Press in June 2021. The book had a total of 374 pages and was priced at 49.80 yuan. According to Douban's rating, the book received 7.2 points and a total of 965 reviews. The specific content and storyline were not provided yet.
I don't think so. 'Hard Ball' is typically a work of imagination, not based on actual events. It might incorporate elements that seem realistic, but it's not a factual account.