In a large pot, combine the vegetable broth, soy sauce, hoisin sauce, ginger, and garlic. Bring to a boil over medium heat, then reduce to a simmer and let the flavors meld for 15 minutes.
Meanwhile, prepare the vegetables. Slice the leek, julienne the carrot, and thinly slice the bell pepper.
Cook the rice noodles according to the package instructions, then drain and set aside.
Add the prepared vegetables to the simmering broth and cook for an additional 5 minutes until they are tender-crisp.
Divide the cooked rice noodles among four serving bowls. Ladle the hot broth and vegetables over the noodles.
Garnish each bowl with a generous amount of fresh cilantro.
Serve the Vegetarian Chinese Pho with lime wedges on the side for squeezing over the soup.