Let me introduce Shen Hongrui. He is an engineer in Beijing, China. And he had a problem. He loved going to the pizza and salad buffet at his local Pizza Hut, but their rules only allow people to take one plate of food. So he never felt like he was getting enough.

So he put his engineering expertise to use and figured out a strategy any of us can use to maximize our trips to a buffet. Whether you're only allowed one trip, or whether you just want to get the most out of every trip, this trick's for you.

In the end, you'll have a three-foot tower with carrot foundations and cucumber walls, and all the food you want in the middle. You might even want to eat those vegetables, too. Don't forget to order a diet soda!