On the twentieth anniversary of the pro-democracy protests in Tiananmen Square, Chinese media came under tremendous pressure from authorities. "Ming Pao" reported on the Publicity Department's "hitherto unimaginable extent" of pressure to screen out any related content. The journal reported two incidents in 2008 which caused official concern, but which could not be proven to be deliberate challenges: "Beijing News" published an image of an injured person being taken to the hospital on 4 June and "Southern Metropolis Daily" reported on unusual weather in Guangdong province with the headline of "4 storms in June," which both journals insisted were due to carelessness. Some newspapers have therefore instructed their editors to refrain from using the numbers '6' and '4' in their reports during this sensitive period. Furthermore, the numbers cannot be used in the headlines lest the Publicity Department disapprove.