Since I can communicate with them in Pin Yin (eventough I'm not a chinese), I don't have any problem with them. Seems like all of them, once they know that you can communicate with them, they'll opened up and be friendly with you. Well, at least in my experience.

During the rampaging of chinese farmers in 2005, whenever one appeared in a place I was currently farming, I would talk to them to split our territory ( Mine is north, yours is south ). It worked! No more having to race with them to kill a monster.

Also, if you befriended one long enough, you can actually buy items from them for a cheap price, heck they'll even give to you for free if they've reach their quota. More than that, they'll even tell you where and where is a good farming place.

Not only that, some of them are really good chat buddies. We chatted about lots of stuff, eg life, current things happening in your place/country etc etc while farming.