This exchange student realized that China was not built for tall people
It is no secret that people from different regions have different physical characteristics. In general, the Dutch, for example, tend to be very tall. So, when they go to places where the median height is on the shorter side, such as China, they may run into some obstacles.
These obstacles, as seen here, may include roofs. Public spaces and buildings are usually designed to serve as many people as possible, but when foreigners arrive with drastically different measurements than most of the locals, they have to find ways to adapt.