Based on the provided story, here is the evaluation of its Tragedy Degree and Comedy Degree using the specified criteria:

### Tragedy Degree:
- The story contains elements of hardship and discrimination, which can evoke emotional responses.
- The elderly man's initial despair and mysterious ailment add a layer of moderate tragedy.
- However, these elements are counterbalanced by the themes of hope, healing, and social justice. 

Considering the balance between moderate tragic elements and the overall positive resolution, I would rate the Tragedy Degree as a **4**.

### Comedy Degree:
- The story does not contain significant comedic elements.
- The ending is uplifting and positive but doesn’t include strong comedic aspects or an extremely happy, emotionally delightful conclusion.

Given the positive resolution but lack of distinctive comedic traits, I would rate the Comedy Degree as a **4**.

Here is the evaluation in JSON format:

```json
{
  "TragedyDegree": 4,
  "ComedyDegree": 4
}
```
