Pronounced: hÄ“i gÇŽi kÇ” jiÃ o
Literally: dark reform bitter education
Means: “The labour camp is dark and reeducation through labour is bitter.”
Related phrases include:
lÃ¡odÃ²ng â€‹gÇŽizÃ o
(Reform through labour)
(1. shorthand for åŠ³åŠ¨æ”¹é€ ; 2. a prison camp)
lÃ¡oâ€‹dÃ²ngâ€‹ jiÃ oâ€‹yÇŽng
(Reeducation through labour)
(shorthand for åŠ³åŠ¨æ•™å…»)
You can see/hear some of these terms, with English subtitles, between 7:10 and 8:47 of this Al-Jazeera investigative report.
The sign says:
Who are you
What is this place
Why have you come here
You can find the answers to those questions in the video linked above.