Transformer trucks that turn into large banquet halls at the press of a button have become popular in many rural areas around China in recent years.

Recently, a video showing what looks like a container truck capable of morphing into a banquet hall in just six minutes went viral on Chinese social media, but according to several news reports, the intriguing vehicles have been around for a while now. They first appeared in China’s Inner Mongolia region but proved so popular there that they quickly expanded to neighboring provinces like Heilongjiang, Jilin, and Gansu. In recent years, they have been spotted in rural areas of northern Shanxi, northern Hebei, and western Shandong. The trucks can transform in just six minutes and can accommodate up to 200 people.