Unparalleled, with a Sword Hidden in His Heart [PILI Puppet Show]

[The protagonist's past-life story, "How Proud We Were in Our Prime [Comprehensive Martial Arts]", is ongoing] [Updates whenever inspiration strikes! Family bonds, family bonds, family bonds + friendship + sworn enemies] The protagonist is reborn as the fourth son of the Shi family, sharing one body and two souls with Xiaoyao You, and along the way writes a heartwarming family drama about the Shi family (nope). * After Shi Zaijie came of age, he had empty pockets, no fame or power, enemies all over the world, and a mountain of debt to the Ghost Doctor. Zaijie: "I have to cut all ties with my old identity!" To that end, he sets his sights on an unclaimed identity: the world's greatest swordsman, Qiushui Fuping Ren Piaomiao. Xiaoyao You: "Ren Piaomiao is Shen Gu Wen Huang." Shi Zaijie: "Did anyone see it? Did anyone find proof? Has Wen Huang admitted it? Has Ren Piaomiao appeared in person to confirm it? Nobody claims to be Ren Piaomiao, so I will: Yes, I am Ren Piaomiao, master of the Pearl Tower, the world's greatest tower!" Shi Piaomiao arrives at the Pearl Tower: "Come on, go to the treasury and take a hundred thousand taels of gold to the Ghost Doctor. Tell him it's part of a debt I'm repaying on someone else's behalf." Shen Gu Wen Huang, hearing that the Pearl Tower has welcomed back its master: ?!! Wen Huang: Let me see who can imitate Piaomiao's signature moves so perfectly. Zaijie: Thank you, Uncle Wen Huang, for making Zaijie a person with money, fame, status, and an identity! * The zither is called Peerless Paragon, and its player is known as Xiaoyao You. It wasn't until twenty years later that Lang Piaoping learned there was also a sword hidden inside Peerless Paragon's body. "Xiaoyao You, I never knew you could use a sword." Xiaoyao You: "It's not my sword." Zaijie: "Thanks. It's my sword." * Two souls in one body: sometimes Zaijie squeezes into Xiaoyao You's room, sometimes Xiaoyao You squeezes into Zaijie's, and sometimes they switch rooms. What the hell do you mean, switch rooms?! Zaijie: Xiaoyao You tricked me to death. Xiaoyao You: Shi Zaijie tricked me to death. "Guess we'll have to wait until next time to get him back." "Guess we'll have to wait until next time to get him back." * [Highlights] Not danmei, not romance, just the original couples. The protagonist doesn't know the plot. Strong, beautiful, and adored, with an intense focus on blood ties. No logic, updates whenever inspiration strikes, not contracted. Writing for my own enjoyment comes first. Theme: Healing family bonds