Which episode did Fan Xian find the key?

It was 12 years ago. The empress gave birth to a princess. She declared to the public that she was a boy, named Xia Shimin. Three years ago, Xia Shimin was made the crown prince and arranged a marriage with the present Grand Preceptor's daughter, thus securing the imperial power. ...... Zhang Ronghua crossed over at her birth. As a proper forbidden soldier, he has been hiding out for 15 years in the royal residence. Every day that passed, his talent would increase by one point. Seeing that the wedding date was getting closer, he accidentally found out that the crown prince was a woman. The night of the wedding. Prince: I need you to marry me!

Xiao Changtian was a zoo keeper. He did not expect to get transmigrated with his zoo. However, in the new world, he had no power but all his animals had become celestial beasts. One day, the empress was heavily injured and was able to recover after consuming the egg of a tortoise from him. After she had learned that it was actually the egg of the Black Tortoise, she insisted on becoming his servant. “The egg that this man gave me was the egg of the Black Tortoise?” “Wait! Is that the legendary Phoenix resting on the tree?” “What that unique beast that’s black and white? Why have I not seen it before?”

[There's already a grand, high-quality complete series of 6,000 chapters for you to read with confidence.] Choice is greater than effort! Martial masters fight bloodily over terrestrial treasures, yet the deep-water sacred herbs remain unclaimed. Having crossed over into a fisherman, Liang Qu obtained the Water Ze Cauldron, refined the Water Monkey's innate abilities, commanded Water Beasts, reaped benefits all along the way, and stepped onto the peak. [Water Monkey]→[Ze Rong]→[Water King Ape]→[Lord of Huai Whirlpools]! From then on, I ruled over the expansive Ze waves! ............ On the shore, people knelt in prayer, offering sacrifices. "May the Water Deity bless us..." Damn, could you stop sacrificing maidens to me? I'm really not a Water Deity!

Five years ago, after a car accident, Ye Fan fell from a demonic prodigy to an "idiot"! Five years later, on the same day, his seven older brothers and three uncles all perished on the battlefield, a family of ten loyal martyrs! At the funeral, Ye Fan's fiancée called off their engagement. The stunning sister-in-law declared on the spot, "If you didn't want to marry him, I will! I am willing to carry on the Ye Family line..." Ye Fan felt uneasy, "Sister-in-law, please don't. I'm really not an idiot anymore!"

[Sweet, No Abuse, Strong Female Lead, Favored By All!] When Ruan Qi became famous. Haters: No matter how pretty, she's undereducated. That very afternoon, the most prestigious institution of higher learning in China posted on social media—Let me introduce our youngest doctoral supervisor, Professor Ruan Qi. Haters: What's the use of hyping up a scholar persona? In the end, she'll still have to bow down to her financial backers. The next day, Ruan Qi appeared at an international economic conference, with her name tag reading—Chairman of Qimu Pharmaceutical Group. Haters: Making so much money, not knowing to contribute to the country. Three days later, an official news release—A new model of nuclear submarine is launched, thanks to Chief Designer Ruan Qi and all the research and development members! Haters: ... Can't afford to provoke, goodbye. * After getting married, a reporter asked Xi Jiu: Ninth Master, how did you manage to pursue the Goddess Ruan? Xi Jiu quietly flipped open a diary. Diary of Chasing My Wife: 1. Vote for my baby in rankings. 2. Cast votes for my baby. 3. Support my baby. 4. Buy out all the tickets for my baby’s movies. 5. Join my baby's fan club. …As everyone knows, the Goddess Ruan has a universe-level wealthy hardcore fan—Ninth Master Xi, Xi Jiu!

The Xian Practice would eventually be successful! It was as if a test from raging heaven. The Soul Removal technique to become the greatest immortal needed both strength and endurance. Nine hundred and ninety-nine lighting strikes could not do any harm to his soul… Yes… They could not do any harm. If he had succeeded in the technique, he should be in heaven… but why was he here?! He was now in the body of a seven-year-old kid named “Merlin”, the son of the third minor wife of “Witcher”, who came from the wealthy family “Szirtes”. Even though he was the son of Witcher and the grandchild of Earl Szirtes, his mother was still an unworthy, poor servant. So, his status was the ‘servant’ that the family loathed. What was more shocking was that the little kid who looked as if he could break at any moment was able to refine an enormous amount of vital essence, or Qi!! He could even easily penetrate the first level of qi!! The strange power for Xian Practice in this world was different from that of the world he came from. It was a great treasure all the Xians were looking for. It was called the great “Magical Power”. This might be a second chance from heaven! The Xian Practice using magical power has now begun!