Phobias can be classified into several types, and Qian chose this method to treat Zheng Xu because she firmly believed that Zheng Xu's phobia was caused by psychological factors, rather than genetic or inherent traits.
Zheng Xu definitely doesn't have a cowardly or highly introverted personality; he's very responsible. As people in the Northeast would say, he's a real man. So having a phobia shouldn't be typical for someone like him.
Therefore, there must have been a year when he experienced something traumatic, yet he's either unaware of it or has selectively forgotten it, causing subconscious fear.
The only way to handle this type of phobia is to find the person who triggered it and have that person apologize to Zheng Xu in person. Qian could then slightly guide him, and the problem would be resolved.
However, even such a simple psychological issue took Qian half of her previous life to solve, and she never succeeded. So, in this life, she's determined to figure it out.
