Thank you.
It's going to vary somewhat. My experience was in a detention centre in Beijing. I don't guarantee that it's the same for a Hong Kong prisoner.
First of all, the lights are on constantly. They say this is a security measure, but clearly it also wears on you. You have a lack of sense of the time of day or any circadian rhythms. You're woken at about 6:30 a.m. by a bell. You have about half an hour to drink some water. There will be a roll call where you have to sit at attention on your bunk.
The rest of the day is broken up into periods where you have to sit on the edge of your bunk and study, which are called zuo ban’r xuexi. Essentially, you are supposed to sit and reflect on your crimes or study if you happen to have the fortune of access to books, which is often not the case. If one can ensure that prisoners have books and reading material, that is a very important way to alleviate their suffering, frankly.
You will have three meals a day, but as the guards once told me, “We make sure that you are able to eat enough. It's not our responsibility to make sure you eat well from a nutritional perspective.” The food usually is utterly devoid of protein and is mostly overcooked vegetables and rice or bread, and that's all. That, especially over time, for a detainee like Jimmy Lai, can start to have grave health effects in terms of muscle loss, bone mineral density and other health effects like that.
There is virtually no scope to do any real exercise. You're usually locked into an area. There is no gym or other facilities like that, normally. You are often held in very close and utterly confined circumstances. I need to underline that for the situation of someone like Jimmy, it is the isolation and the confinement that take an utterly devastating toll on the psyche, on the nervous system and on the body. It is brutal punishment, frankly. It is inhuman. Under the UN's Istanbul protocol, the solitary confinement in particular is unquestionably torture.
Let us be very clear. As far as I am concerned and serious psychologists are concerned, Jimmy Lai is being consistently tortured in this situation. This is utterly unacceptable. The confinement of these imprisonments, and the grinding routine and monotony, all contribute to grinding you down. That is exactly the purpose of it, unfortunately.