To get total destruction in Year of the Dragon level 1-12 use the yellow and white bird to take down the first part of the structure. Fire the boomerang bird so it destroys the middle TNT then the try and blow up the TNT on the far right side with the yellow bird. Aim the fish so it lands in the fish gap and falls to the ground.
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Launched the Fish in a high arc to land on the left most tnt. It seems the best position is up against the dark brown stone rock structure. The tnt did not activate prior to the MD hitting its location.