The ancient Chinese kitchen also utilized a built-in outdoor pizza oven known as a 'lu'. These ovens were made of clay or brick and were used to bake a variety of bread, including flatbreads similar to pizzas. The Chinese enjoyed toppings such as vegetables, tofu, and various sauces on their flatbreads, creating a flavorful and nutritious dish. The 'lu' was an important component of the Chinese kitchen, allowing them to cook their pizzas in an outdoor setting, infusing them with smoky flavors and crispy textures.