This book has nothing to do with pear blossoms, just because the heroine's name comes from "Wusha Nian·Lingxu Palace Lihua Ci".
Zhuo Nao, the heroine of this book, has a mysterious background. Most heroines have a mysterious background, and this one is no exception.
He Xichuan is a fool. Most male protagonists are not fools, but they all fall in love with the heroine stupidly, so they are all fools.