Travel procedures from Haikou to Hong Kong

I am a student. I just went to apply for the Hong Kong and Macao Pass half a month ago, and I need to take my household registration book to the Municipal Public Security Bureau (opposite the Baiguang Department Store on Jinlong Road). And those of us who belong to the collective hukou have to take our hukou book from the management organization to the municipal public security bureau, where it costs 30 yuan to take a photo. It seems that we can also take two photos ourselves (48*33mm photos with white background) and get a pass.