I play quite abit on these tables as well here in China. Like an earlier poster mentioned, these tables are dominant in the northern region of China and you'd be lucky to find a regular pool table in those parts of China.
I'm located in the middle of China and these kind of tables are still relatively dominant. In regular pool halls i'd say the ratio of regular pool tables to Chinese pool tables would be 1:5 to 1:10. As you move further south of China tables like these(Chinese pool tables) gets lesser and lesser and regular pool table becomes the norm.
Having played with both regular pool table and these chinese pool table on a regular basis (i just played on both yesterday, 2hrs on each) the play is very different and in my preference requires different cues or shafts.
Chinese pool table requires alot of accuracy much like snooker does. The pockets may look large (due to opening curvature) but trust me, they are not. They are not at all forgiving and i've attached a few pictures for reference. The only forgiving part about these pockets would be the center pockets where due to it's curved sides allow for wider angle of "acceptance" but it's still a tight pocket when you compare it with regular pool tables. Not sure if the last statement makes any sense..
In order to pot a ball you have to be Spot On. There's no "cheating" off the pockets or allow the ball to "booble" in...it's either you got it spot on or you're ball gets spit out.
Speed on these tables are very much slower much like snooker and as for the rails i sort of feel they are the same but because cloth is slower the balls simply moves different when coming off rails.
Because of the accuracy required plus the slow movement of balls, i find myself relying less on english and coming off rails when moving the cue ball. Whenever possible i try to keep the shots simple using the basic stop, draw or follow through. Instead of coming out of rails to place for next shots, i'd prefer to slide as much as possible or come off as few rails as possible. This habit is much like snooker players habit as due to slower CB movement sliding for positioning is much easier and reduces the need to add unnecessary english to CB which affects my accuracy. Again i'm writing based on my lack of skill, i'm sure many better players out there would play otherwise.
As for cues, i like my cue with some flex and soft tips when i play regular pool. But for Chinese pool, i find myself preferring the use the medium hardness tips with slightly stiffer or firmer shafts (Also one good reason why SW cues are so darn popular in China). I bring 2 shafts out when i'm out playing, one with a Medium Hardness Tip (Kamui M or G2 Medium) and another with Soft Tip (Kamui S to SS and G2 Soft), one of each game. It's not a deal breaker to use the "wrong" tips or shafts but it's just a personal preference that i notice allows me to perform better. It could again be psychological or my lack of skills finding excuses.
Here are some pictures of the pockets of a Chinese pool table i took a while back.