I recommend "Dancing to Immortality." This book is a Xianxia novel. The female protagonist traveled to ancient times and taught the ancients yoga. With her efforts, she brought dance to ancient times. In addition, the book also involved refining weapons and alchemy. Although it didn't completely fit the description of the problem, there was indeed a scene in the book where the female lead danced. I hope you like this fairy's recommendation. Muah ~😗