We've seen reinterpretations of Transformers before, even from China. However, with so many pieces already complete and for sale, these two guys seem to be making a very cool job out of it.
Not only that, the father and son are making money. According to a report from Shanghaiist, Yu Zhilin of Zhangmu township in Hengyang county and his son make more than a million yuan each year ($160,436 at current exchange rates) selling these Transformer creations in China.
Apparently, the Transformers movie franchise is huge business in China. According to Wikipedia, Transformers: Age of Extinction, which was released in 2014, is the highest-grossing movie in China of all time.