HELP FINDING PASSWORD IN THE ZIP!! (Chinese)

I want to read the Doujinshi but it has a password and I can't read Chinese so I can't guess what the password is ;___; please help ;;;A;;;

Here is the weibo to download the doujinshi ????

Here is the hint to find the password
【解压码提示：该本CP罗马音（7个字母全小写）+该本发售日期（6个数字/今年春co日）】

and in English, it said: Extract code note: the sound of CP Romaji (7 letters all lowercase) + the release date (6 digits / this year’s spring co day)

:?

CP = Couple = Hijikata x Gintoki = hijigin?

春CO = Haru Comic City = March 16, 2014 = 031614?