Hong Kong has been experiencing economic downturn in the 1950s, meanwhile, refugees from the Mainland fled to Hong Kong constantly after the establishment of The People's Republic of China, leading to an increase in population. People struggled to make a living, they started to operate mobile stall using wooden carts with a low production cost. With the portable carts, street vendors could get away in time from being arrested by the police. In the 1970s and 1980s, a wide variety of products are sold then. Besides food and snacks, household goods, clothing and kitchenware could be found in the carful in place like Sham Shui Po.