I said “some pressure” not “too much pressure”
I tried again this morning, using one note, and I’ve compared with my n-trig pen on my old Vaio Tap 11 tablet.
For both pens when applying no pressure (just letting the pen tip rest on the screen with it’s own weight) nothing is written, N-Trig pen is detected as a cursor tough.
With around 10-15 grams of pressure from my hand, the N-Trig pen starts writing the line is very thin.
With around 15-25 grams of pressure the chuwi Hi Pen starts writing, line is thicker but still pretty thin (I guess this stylus is not as good as an N-Trig one, price is not the same).
So far I haven’t been able to reproduce those randomised pressure points.