He took spaghetti off the menu despite its popularity, because he didn't want to spread himself too thin. He just wanted to concentrate on pizzas.

The Hell's Kitchen pizza is one of the most popular items at the diner. It features a thin crust and generous ground beef, pepperoni, green peppers, mushrooms and mozzarella.

The Captain From Ragusa pizza is also frequently ordered, thanks to its lush tuna, shrimp and mozzarella.

The diner has also won the loyalty of dozens of foreigners working or living in Huilongguan.

"The food and ambiance can let me forget being in a foreign country," says Crystal Amaya, who is from Los Angeles, California. She works as a teaching consultant at an education facility in Huilongguan.

She loves the Spinach Pesto & Chicken and the Margherita pizzas best, and is especially fond of the cheese, which according to Ran, is imported from Italy, along with other ingredients, such as the tomatoes.

Jonathan Dotson from the US, a professor and consultant, believes that Yummy Box's pizza is a well-balanced combination of American and Italian pizzas.