Tourist type entry permit for China from Japan

Hi Alex! You don't need to apply through a travel ageny. You can just go to the consulate or embassy which has jurisdicton over your residence and submit the application for an L type. The required applcation documents are your passport and its photocopy, a filled application form glued with your recent photo, the original and photocopy of your residence card in Japan, and an invitation letter from your girlfriend's family.