hello sir , i have got one question to clarify ,in 2010 i got the invitaion letter from my privously studied university in china for further studies and then i also got the visa but due to my internship back at my home i couldnt manage to go at that time but now i have finished my internship here and wanna go to my priviously studied institution for further studies ,the invitaion letter is still with me so in this case what i should do to get the X visa again,SHOULD i directly take this invitation letter to apply for visa agian or what ,please guide me the best and easy way to ensure my visa ,i will be grateful Thanks