I had travelled india & nepal. So, will i get a tourist visa? & what documents do i need to submit?

yes, it is possible for you to get a tourist visa. The basic documents are your passport and the completed visa application form with a photo. You should alos submit one of the following sets of supporting documents:
(1) Invitation letter issued by authorized travel agencies and applicant's bank statement. The bank statement should prove that the applicant has at least 100 USD each day during his/her stay in China.

(2) Invitation letter issued by travel agencies registered in the Mainland of China, hotel reservation with complete payment, detailed travel schedule in China, round air ticket and bank statement. The bank statement should prove that the applicant has at least 100 USD each day during his/her stay in China.