Steps
1. Boil water in a pot and add a little salt.
2. Add crabs and shrimp to the boiling water and cook for 5 minutes.
3. Add mussels to the pot and cook for an additional 2 minutes until they open.
4. In a separate pan, melt the butter over medium heat and sauté the minced garlic until fragrant.
5. Stir in the tomato paste and cook for about 1 minute.
6. Add oyster sauce, Sprite, brown sugar, and black pepper to the pan and mix well.
7. Cook the sauce until it thickens, then pour it over the cooked seafood and serve warm.