I have gotten admission to pursue my studies up to 6yrs and i want to know the visa type i fall under and the fees.

You need to apply for China Student Visa (X visa) for 6 years study in China, in fact, a X-Visa is valid for 3 months for a single entry with no specified duration of stay. You are obliged to apply for residence permit at the local public security bureau within a month after entering China. Generally speaking, the residence permit is valid for one year and you have to renew it annually.