How accurate is the grading warp yarn of Guiguzi's double-ended pliers?

Originally, they were newlyweds, but they had to be separated because of state affairs. People feel respectable for their love. Although they can't meet, they miss each other day and night, saying in their hearts that we will meet one day. It's like a story about a general and his wife, and what I wrote is the simplest and clearest meaning.