After Marrying the Dragon Prince Who Is Infertile for His Sister

My sister and I got married at the same time. She married the extremely noble prince of the dragon clan, and I married a carp spirit of the same clan. Unexpectedly, the prince of the Dragon Clan was inhumane, and his sister had nothing to do for a hundred years, and was eventually kicked out of the Dragon Palace. I gave birth to a litter of little carps. When they reached adulthood, my little carps actually transformed into real dragons when they jumped over the dragon gate. I was named the Mother of Dragons by the Emperor of Heaven, and I moved to heaven with my children. My sister was so jealous that she killed me with a dagger while I was visiting her. When we open our eyes again, we go back to the wedding day together. My sister can't get off the sedan chair that belongs to me, and she doesn't want to marry to the Dragon Palace. I turned around and got on the dragon palace's sedan chair. My sister wanted to go to heaven and become a god by having children, but little did she know that life in heaven would not be so easy.