Chinese Cinnamon Beef Noodle Soup

Name: Chinese Cinnamon Beef Noodle Soup
Ingredients: 1 teaspoon vegetable oil; 3 cinnamon sticks (about 3 inches each); 6 scallions, cut into 1 1/2 inch pieces; 6 garlic cloves, smashed; 2 tablespoons fresh ginger, minced; 1 1⁄2 teaspoons anise seeds; 1 1⁄2 teaspoons asian chili paste; 7 cups water; 4 cups low sodium chicken broth; 1⁄2 cup soy sauce; 1⁄4 cup rice vinegar; 2 1⁄2 lbs boneless beef chuck; 9 ounces fresh udon noodles (or 6 ounces dried); 1 1⁄2 lbs bok choy; 1⁄2 cup fresh cilantro leaves