Ever wonder how to make the most of your trip to the buffet? Shen Hongrui, a Chinese engineer, started a trend dubbed “salad bar hacking” by building this three-foot food tower. Here’s how it works: First, fill a bowl and lay carrot sticks on top. Next, build walls by layering cucumber, orange, and tomato slices. Lastly, fill the tower with your choice of food. This practice became so popular in Hongrui’s native China that it caused local Pizza Huts to shut down their salad bars, reports the Daily Mail.