Preparation:

Pasta:

1. Place a large pot of water over high heat and bring to boil. When boiling, add salt and stir. Cook pasta into the boiling water until "al dente" (around 5-6 minutes)
2. Drain pasta and keep some starchy water for the sauce. Set the pasta aside.

Sauce:

1. Chop chilli padi and garlic. Cut the shrimps into smaller pieces.
2. Heat olive oil in a large pan over medium heat.
3. Add garlic, then chilli padi and saute for 3 minutes.
4. Add shrimps, pepper and cook for 3 minutes, then set aside.
5. Add sliced tomatoes and tomato puree and simmer over medium-high heat for 15-20 minutes.
6. Add a pinch of salt if necessary.
7. Stir often until reduced then add back the shrimps.
8. Add pasta back into the pan with the sauce, then cook it for another 1-2 minutes.
9. Sprinkle with chinese celery, toss well, and serve hot.