Meng Qianqian proposed a seemingly reasonable condition.
Tan'er was her maid, yet her food, clothing, and allowance were no different from Bai Yuwei's, and she called her "sister" intimately. Shang Wuyou could naturally tell that Meng Qianqian treated Tan'er as if she were her younger sister.
Therefore, for Tan'er's sake, it was possible she would do such a thing.
But was Tan'er's background truly as she claimed?
Forget it. No matter what schemes she was plotting, he had to return to the Thousand Mechanism Pavilion.
Tan'er was just a gluttonous little girl, skilled in martial arts but not hard to deal with.
As for why Tan'er was placed by his side rather than someone else, in Shang Wuyou's eyes, it was because Meng Qianqian had no other choice.
Anyone else would have drawn too much attention and immediately aroused suspicion.
Tan'er appeared harmless and unassuming. Even if her true intentions were questioned, no one would view her as a significant threat.