China public figure for Beijing South Railway station big screen advertisement?

Baidu keyword from the line, to the offline entry point, bus, newspaper kiosk, the public and China map, the Civil service examination of the two largest training institutions in advertising has been a race, divided without letting. The two recently aimed at Beijing South railway station and other stations, for large screen ads. Recently Netizen "Rising Sun Peng Fei" Hair micro bo, "Beijing South station of the giant advertisement, this is the public, the opposite is the map, the civil service is still so fire ah", with the map is the public education "Since 1999" in the red background of the huge white text ads. The scramble may have begun months ago, some netizens said in March, the last time to see the Beijing South Station or the Chinese map ads, half a month later the public also came, and hang higher, do longer. The display of the railway station is not new to two institutions, at least from last year, China has bought the Beijing railway station, Beijing South railway station and Beijing West railway station ads, in the form of stations and Subway interchange area of the Bao ads. Many English and vocational training institutions like to play subway ads, because the price is cheap, thousands of people show lower cost, railway station ads and the audience such as outdoor screen advertising the same. But what about the conversion rate? I'm afraid only the advertisers will know.