I think a portion of the game would take place in Guilin, then Ryu would most probobly goto a more populated area, and even a possibility of going to the Chiyou Men's HQ. I remember in Shenmue2, on disk4, in Shenhua's house, when you look at one of the pictures on the wall, Shenhua tells you name of the place(Can't remember it) And she mensioned that anyone who went there, never returned, could be the Chiyou Men HQ or another organization.
As for the jobs, When talking to Shenhua in Shenmue2, they talk about what Ryo's job was, he tells her he was lifting crates, then Shenhua say's something like ''There is a similer job in my village, a man has some Cows--'' then Ryo inturupts. So the job would probobly involve Cows.