Tie Guan Yin

I first, I was like “mmm smells good”. The leaves are quite green for a Tie Guan Yin of this grade (or so I think).
I tried it in a small teapot (0,2L) and 20 seconds … almost nothing. I was drinking hot water with a very faint flowery taste. I tried to increase the duration of my brew … nothing, still too light.
Alright, let’s follow what’s written on the bag. Big teapot, 4-5 minutes. Still very light with an off taste, green but more like fresh leaves than flower.