We are in shanghai we want to take the train to the great wall What's the best way?

Take a bullet train to Beijing South Railway Station from Shanghai Hongqiao Railway Station. Take subway line 4 to Xuanwumen, and change to subway line 2 to Jishuitan Station, Exit B2. Walk to Deshengmen Station. After that, take bus no.877 to the Badaling Great Wall directly. Notably, Bus no. 877 is only available before 12:30.