Traveling Through Time and Marrying as a Concubine

She accidentally fell into the water and traveled through the river. She woke up on the sedan chair. She had inexplicably replaced a prime minister's daughter and married a shady general. The key was the concubine. Obviously, this general had no real wife, and a dignified "prime minister's daughter" was actually married to him as a concubine. The key is that the general's first two concubines disappeared for no reason, which makes people feel chilling. If you want to live in this era without relatives, reasons, or background, you can only rely on yourself.