The career Xu Jing wanted to pursue had been decided on the very first day she arrived in this world: treating the sick and diagnosing illnesses.
However, treating the sick and diagnosing illnesses isn't something you can do just by setting up a stall. No one is careless about their health, especially those with power and influence who usually have doctors they trust or are familiar with. Even when they need to call in an external doctor for a difficult or rare disease, they will certainly choose someone with a good reputation.
Being a doctor is a way to save lives, but it's also a means of making a living. Although Xu Jing deeply respects doctors who dedicate themselves selflessly, her current situation doesn't allow for such selflessness.
Since she decided to enter this field to establish herself in this world, her primary goal was to make money – and enough of it to secure her foothold here.
