My Sister Is the Real Dragon Girl

My sister is the first golden egg of the Dragon Clan. On the night when it was born, someone tried to exchange the raccoon for the prince and take away the sister. I hid in the dark and quietly replaced the real golden egg. I thought this matter was over. I didn't expect that a girl claiming to be the true daughter of the Dragon Clan would come to my door a hundred years later. She said her sister was fake and showed her dragon mark to everyone. But my sister has obviously been replaced by me. Then who is she? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.