I think it's more likely that you got a mislabelled tin. First, does the leaves look like this?
Yes, it looks like that. But I can't tell the difference between that and Oolong #18.
I just find it strange, because I can't find any of the flavors in this tea that others have described (butterscotch, wood, mushroom, earth, brandy) except for maybe smoky. And it definitely doesn't smell floral to me.
Also, if you got a mislabelled tin with tea that tastes "green," it would probably be green tea. So if it is green tea, it would taste fairly bitter if you brewed it like a wulong. So, was it bitter?
It is slightly bitter, but not excessively so. I would characterize the flavor as "sharp". It also has a very dry aftertaste.
One last question, did you add any sugar to it?
No, absolutely not. I try all tea without anything added first. I only add something if I feel that it might complement the flavor of the tea.
I had noted that the tea leaves smelled kind of green over a week before I ever tried the tea. The day my samples arrived, I opened every single one and smelled it. But I have found that some tea leaves smell green without imparting a green taste to the infusion (and visa versa), so I didn't worry about it at the time.
Tonight, I tried "rinsing" the leaves with boiling water, and that helped a little bit, but it was still pretty grassy. On a whim, I also tried adding sugar to it (after determining that I didn't like it), and you were right: the sugar made it far, far, far worse.
I am literally going to be physically ill if I try to take another sip of this tea, so I'm not going to be brewing any more cups from this particular sample.
if you are willing to PM me your postal address, I would like to mail you a small portion of this sample (say, 2 tsp) to try and verify whether or not it is, in fact, ti kuan yin. If it is, then that is fine (just means I don't like it). If it is not, then at least I have someone with experience backing me up so that I can get a replacement sample.