How Could the Substitute Junior Sister Possibly Be a Big Shot?

[Not a wish-fulfillment story at first! Naturally mutated lightning spirit root + growth-focused + tons of golden fingers later on] When Jiang Yinxie woke up one day, she had lost her memory, so she decided to muddle through somehow. The master she had revered for eighteen years treated her as a substitute for her mother, who had been dead for eight years. She was soft-spoken, indecisive, unlearned, and utterly forgettable. She wasn't worthy of being Yuchi Sect's junior sister! Then, without meaning to, she became a major player who stirred up the whole world! * A certain young lady wielding twin blades chopped onions one after another, teasing as she went: "Today is a good day to show off some onions." The teary-eyed junior sister said, "Try a little of everything, and it'll only do you harm." The formation master threw a furious punch, splattering brains everywhere: "Punching feels great. Don't @ me!" The eldest senior brother stared expressionlessly at the pill furnace wafting the scent of onions, lost in thought. * Ever since the junior sister returned from her travels down the mountain, everyone in the sect had noticed that she had grown more than a little stronger. She was no longer the gentle, soft-spoken junior sister they knew. The Cultivation Daily even exposed all sorts of her secret identities, including a renowned genius at erosion magic and a member of a team that rescued people in danger! The junior sister with a fishing rod in hand became the darling of the whole world! A certain senior brother with his little tail held high: "Mm-hmm." The writing style is inconsistent. If you ask, I'm still figuring it out. 420,000 words ready in advance, with daily updates scheduled for 8-9.