Soaked the vermicelli with warm water for 10 minutes. Drain and keep aside.
Add vegetable oil over medium-high in a large pan or wok. Add the minced garlic and mushroom, sauté until fragrant.
Add doubanjiang paste, oyster sauce and chili oil or paprika powder; stir it well. Then, add stock.
Add in cubed tofu, taking great care not to break the pieces, and cook a few minutes. Then, add vermicelli and cover it. Cook until the noodles soft.
Add cornstarch slurry and stir until thickening of the sauce becomes thick.
Mapo Tofu noodles is ready to serve. Garnish with chopped coriander leaves or spring greens.