This source, an issue of an IT journalist's newsletter, focuses on China's strict consumer protection policies, particularly the "San Bao" (Three Guarantees) which mandate free repair, product replacement, and return options for certain products. The text explains that while the laws are rigorous, consumer consciousness and the power of social media are critical in pressuring authorities to enforce them. To illustrate these dynamics, the author examines two high-profile cases: Apple's 2013 iPhone warranty issues involving refurbished products, and the ongoing 2021 controversy surrounding a Tesla brake failure accident where the consumer demanded public investigation and the company's data was questioned. Ultimately, the article suggests that consumer use of social media effectively drives governmental regulation against corporations in China.