The grading is simple. Singing+stage expression.
You should pay attention to listen carefully, whether the voice is broken, whether the ending is continuous, and whether there is a throat lock. These are easy to hear.
Another is the stage expressive force, which is purely a visual and sensory presentation. As a judge, when you need to comment, you also need to comment from the stage expressive force.
For patients, physical weakness, whether major or minor surgery, will greatly damage the vitality of the body. People after operation want to recover quickly