There’s something very special about the experience of sharing a hobby with a parent, no matter what it is. But Yu Zhilin and his son, Lingyun, have a very unique shared hobby. In 2010, they decided to open a metalworking shop in their home in the Hunan Province of China. Here, these self-taught metal sculptors design and build real life Transformers (and their own creations) from recycled scrap metal. Great Big Story visited the father-son duo as they share how the experience has brought them closer together.