I Am Invincible Thanks to the Eighteen Empresses

On the day I was born, Kowloon was empty and purple energy came from the east. The overwhelming dragon energy filled my body, but my grandpa said that my destiny was too prosperous and that a single tree could not support the world's destiny, and I was afraid of being jealous. He spent his whole life cultivating, traveled all over the nine heavens and ten lands, and found eighteen women with the rare "true phoenix destiny". Eighteen years have passed, and I have hidden myself in the mortal world, keeping a low profile. And those eighteen fiancées who were destined to be my destiny, because they carried my supreme luck, each one skyrocketed and shone brightly! They either awakened their ancient bloodline and took charge of the supreme sect; or they gained enlightenment and became giants in the Alchemy Talisman Formation; or even worse, they commanded hundreds of millions of territories and ascended to the throne of Empress! Together with the families behind them, they also rose from humble beginnings and became a giant and powerful family that dominated the world. The world only knows that the Eighteen Heavenly Maidens were born out of nowhere, but they don't know that behind their brilliance, they all have a common name—the "fiancé" they either look forward to, resist, or have long forgotten. Now that I am eighteen years old, the time for the dragon spirit to return to its original state has arrived. Grandpa warned: You must get married to one of the true phoenixes in order to regain your scattered luck. The dragon and phoenix become one, and you can truly follow your words and be invincible in the world. However, the eighteen fiancées who are already on top of the world... Are they still willing to admit this engagement? Do you choose to renew your relationship with your childhood sweetheart who has shared weal and woe? Or conquer the aloof and cold empress? Or win back the demonic saint who turned to love and hate due to misunderstanding? My road to invincibility begins with finding the "strongest wife". But on this road, it seems that everything