Nan Ya's plan was very good, but she had forgotten that even if Jiang Shuixian was brainless, she was still nearly 20 years older than her. Moreover, she was now relying on her nephew to make a living. Whether it was talking or doing things, she had to put her nephew first. Not causing trouble for her nephew was the most important thing.
When everyone didn't want her and gave up on her, it was Jiang Wenyi who didn't give up on her and sent her to M Country for treatment. Therefore, she didn't only rely on her nephew for the rest of her life, but at the same time, she really treated this nephew as her own son.