------
## 最终结论
```python
def even_or_odd(hex_num):
    decimal_num = int(hex_num, 16)
    return "Even" if decimal_num % 2 == 0 else "Odd"

# Test cases
assert even_or_odd("AB3454D") == "Odd"
assert even_or_odd("ABC") == "Even"
assert even_or_odd("AAD") == "Odd"
```