Ask an old movie

According to the fragment description you provided, this movie may be the Hong Kong movie The Legend of the New White Snake released by 1993.

This film tells the love story between White Snake and Xu Xian. One of the villains is called Qinglong, who pursues immortality and cultivates into a demon by catching fairies such as white snakes. There are many scenes of fairies in white in the movie. One of them is that Qinglong catches two fairies and throws them into a big pit to turn them into blood. At the end of the movie, the White Snake appeared with other fairies and showed their strength and beauty with swords.

It should be noted that there may be some uncertainty in my answer because you provide less information. If this is not the movie you are looking for, please provide more information and details to help you find this movie more accurately.