What does the mark on the bottom of tea cups say? blue and 4 characters

[mae]

Hello! Very happy to find this forum, I am drawn to Chinese art/vases/jewelry.  Anyways, I am hoping someone can tell me what the mark on the bottom of my tea cups says, and maybe someone can tell me if it is new or old?  I don't think very old, but I thought maybe from the 1950s/60s?  Any information would be appreciated!    A different site said that it was "Jingdezhen Cai", meaning "Jingdezhen-Ornamented. 

Also, can anyone tell me what the writing on the box says and what the writing on the side of the cup says?

 

Thank you again!

[Jim]

Yes, that does say 景德镇彩；apparently that means the blank was made elsewhere but it was glazed and decorated in Jingdezhen: https://zhidao.baidu.com/question/358632417.html

Writing on the side says 十二金钗 which refers to women characters from Dream of the Red Chamber: https://en.wikipedia.org/wiki/Dream_of_the_Red_Chamber#Jia_Baoyu_and_the_Twelve_Beauties_of_Jinling

Writing on the box says 古典茗具 which means something along the lines of "classic tea-ware/tea set" 

[mae]

Hi. Thank you so much for the answer. and the link to the Dream of the Red Chamber information.  Kind of neat to have the back story to the -what I thought were Geishas- on my tea set!  Much appreciated!