Well, 'The Greatest Show' is not rooted in reality. It's a purely imaginative work crafted for entertainment purposes. There's no factual basis behind it.
We can show that mother's love is the greatest love story by simply observing a mother's daily actions. She wakes up early to make breakfast, packs lunches, and takes care of all the household chores while still finding time to listen to her children's problems.
The information regarding the biggest failure of " Some comments pointed out that Xu Jingya's role as Zhang Guisheng's daughter was unable to convey true sadness at the critical moment, which became a failure in the film. Other comments felt that her presence made the other actors shine even more brightly, presenting a different artistic conception. There were also comments saying that the biggest failure of " Item 20 " was the marketing strategy in the early stages, which failed to fully exploit the selling point and emotional value of the movie. Therefore, based on the information provided, it was impossible to come up with a definite answer.
There were a few novels recommended by the greatest villain. Among them,"Wearing as the Greatest Villain in the Book (GL)" and "I became the Greatest Villain (Wearing the Book)" were two works that could be considered. However, the other search results didn't provide more recommendations about the biggest villain's time-travel novel. Therefore, I am unable to provide any more relevant information.
There was no specific information about the movie 'The Greatest Sword in the World'. The search results mentioned several movies from different eras, but did not provide any detailed information about the movie, The Greatest Sword in the World. Therefore, I am unable to answer this question.