Jing can show physical effects of the damage, while Ki cannot. Jing can damage objects. I currently have about 4 holes in my bedroom wall where I did Jing blasts.

 

To turn Ki into Jing, just visualize your attack as a solid object, e.g. Ki ball = cannon ball, golf ball. For a beam, you could visualize a telegraph pole or a tree.

 

Jing, roughly translated, means power. Ki, roughly translated, means energy. So this is proof that Jing is stronger than Ki.

 

You can turn all Ki attacks into Jing, so you won't have to give up training with your favourite technique.