So, she is Yiyun, one of the two sisters, and I am Menglong, the other. We're cousins, three years apart. Yiyun and Menglong are our real names, not nicknames or aliases. Yiyun is called Yiyun because her aunt's name contains the character "Yun." As for me, I'm called Menglong because when my mother was pregnant with me, she dreamed of a little white dragon soaring out of a lake and into the sky, where it traced a very fancy "Zorro Z."
One day, the two sisters went to the beach together. As they played in the water and jostled each other...
They transmigrated!
This is another time-travel novel, and it is about sisters. I hope it will develop differently. Come on!