In 2013, some people who worked at a Chinese newspaper called Southern Weekly were unhappy with their bosses. They didn't like that the bosses had changed a New Year's article they had written. The article had originally criticized the government a little bit, but the bosses had changed it so that it praised the government instead.
The workers wanted to protest, which means they wanted to tell everyone that they were unhappy. They made a new article to replace the one the bosses had changed. They put it on the internet and on social media. They also wrote a letter to the bosses asking them to apologize.
A lot of other people in China started to support the workers. They also wanted to protest. Many people gathered outside the newspaper offices to hold signs and shout. This is called a demonstration.
The government didn't like that people were protesting. They didn't want anyone to say bad things about the government. The police came to the newspaper offices and arrested some of the workers. They also made sure that no one else could come to the offices to protest.
This made a lot of people angry. They thought that the government was trying to control what people could say or write. Some people kept protesting online, but the government also tried to control what people could say online.
In the end, the newspaper workers went back to work. The original article was never published, and the bosses never apologized. But many people in China still talk about the incident and what it means for freedom of speech in the country.