Preheat grill.
Combine equal parts of the 5 spices for the shrimp, to taste. Add the shrimp and toss to coat. Grill for 2 minutes, then sprinkle with some of the lemon juice. Flip the shrimp after 5 minutes and sprinkle other side with more lemon juice. Cook for 3 more minutes. Remove from heat, and sprinkle with the remaining lemon juice.