1. you could take a taxi from Beijing South Station to Beijing Station directly. The fare is around 25RMB. Or you could take the city-bus 692 to arrive at the east squre of Beijing Railway Station.

2. Do you mean the Huatai Hotel on Jinsong South Rd.? If so, it is suggested that you take a taxi to the hotel directly. The fare is 30RMB~40RMB

Thanks for the info Mr. Tobby.
Just another question, it's possible to get metro subway from beijing south station to Huathai hotel at end jinsong, as i'll arriving from tianjin to beijing south using bullet train. If yes, may I have the name for subway station?
Thanks alot.

Well, I'm afraid that it is impossible since the Beijing South Railway Station doesn't have subway station. The newly built Line 4 which will be put into use this september will stop at this station~