In a small bowl, whisk together the low-sodium chicken stock, chili paste, soy sauce, rice vinegar, oyster sauce, tomato paste, and grated garlic. Set aside.
In a separate bowl, toss the peeled and deveined shrimp with cornstarch until well coated. This will give the shrimp a crispy texture.
In a wok or large skillet, heat 2 tablespoons of olive oil over medium-high heat until shimmering.
Add the coated shrimp to the skillet in a single layer. Cook for about 2-3 minutes on each side, or until they turn pink and are just cooked through. Remove the shrimp from the skillet and set aside.
In the same skillet, add the remaining tablespoon of olive oil and the cut green beans. Stir-fry for about 4-5 minutes, or until the beans are tender-crisp.
Return the cooked shrimp to the skillet, pour in the prepared sauce, and toss everything together. Cook for an additional 2 minutes, allowing the sauce to thicken slightly.
Serve the Hunan Shrimp over cooked white rice, garnished with sliced green onions and sesame seeds for a fresh finish.