Dubbed the "Great Firewall of China",... the Chinese government has long blocked a number of western websites including Google, Facebook and Instagram.
And after it blocked access to Korea's top portal Naver last year,... now Daum is said to be blocked, as well.
According to several reports on Sunday,... residents in cities such as Beijing and Shanghai were not able to access the South Korean portal site.
Many South Koreans living in China use the Daum blog sites to get a wide range of information,... and to purchase goods.
Back in 2014, South Korea's messenger applications KakaoTalk and Line were blocked in China,... as Beijing ramped up internet censorship that year.