Many people think that "made in china" stands for inferior quality, so let's dig deeper for the causes.

In the five years from 2007 to 2012, a total of 37 bridges collapsed in China, including 13 bridges under construction, which killed 182 people and injured 177, an average of 7.4 "deadly bridges" per year.

In 2008, it was found that many infants were suffering from kidney stones after consuming Sanlu milk powder, which was found to contain melamine and cyanuric acid. According to the china’s Ministry of Health, "By the end of December 2008, a cumulative total of 296,000 children with kidney stones caused by consumption of Sanlu milk powder had been reported nationwide, and 52,898 were hospitalized and treated. The Sanlu incident caused an international outcry and 27 countries, including Canada, the United Kingdom, and Italy, immediately announced a ban on the import of Chinese dairy products and related products.

Ancient buildings are strong and can last long, but nowadays in China buildings are like tofu. Why?