C175 Intimidate
Why would Lee Mengling believe what Xu Ling said? The main reason was that he had shown his hand during the day and cured Chen Guobiao's severely injured body.
With such an example in front of her, Lee Mengling had to believe it even if she did not believe it. Because there was no other explanation that could explain this kind of thing.
Since he had already explained what he had done clearly