Phoenix Unchained: The Crown's Secret

In short: 15 episodes, in English, original audio — episodes 1–10 play right here.

The Empress of the F Dynasty, where women reign supreme, had always treated her adopted daughter with great favor while neglecting her own biological daughter. She even declared the adopted daughter as the Crown Princess. After a birthday banquet, the Empress allowed the adopted daughter to inherit the throne, only to be abused and ultimately killed by her later. It turned out that the adopted daughter had been pretending all along, while the one who truly cared for the Empress was her biological daughter. Filled with regret, the Empress thought that if given another chance, she would make amends to her real daughter. When she opened her eyes again, she found herself reborn on the day before announcing the adopted daughter as the Crown Princess. A palace maid came to report that the husband-selection ceremony, as ordered by the Empress, was ready for the adopted daughter.

Remembering her past-life neglect of her biological daughter, the Empress declared that the ceremony would now be held for her real daughter instead. The maid was shocked, but the Empress left, intending to arrange for her biological daughter to be named Crown Princess and announce it at the next day's banquet. After the Empress left, the biological daughter arrived. The maid informed her to prepare for the husband-selection ceremony, leaving her bewildered—why would the Empress, who had never cared for her, suddenly arrange such an event? Just then, the adopted daughter appeared, overheard the conversation, and began insulting the biological daughter. Originally, the ceremony was meant for the adopted daughter, who had suggested it after taking a liking to the son of the Duke of Zhen. Enraged, she continued to belittle the biological daughter.

Study tip: the first 10 episodes set up every conflict that the remaining 5 episodes pay off — watch them back to back before you decide whether to continue.