Tour to China through Silk Road

I intend to visit different tourism places of China through Silk Road...we are group of about 5 to 6 peoples...we are looking for an independent tour but unable to gather information in this regard..
I hope this forum will be help for me.. Need you guidance...I dont even know the tourism places in China except Great Wall...
so suggest the plan and places as well...moreover suggestion in the matter will also be appreciated :)