In the case of an expanding triangle, shouldn't one be able to count a-b-c-d-e as 3-3-3-3-3 ?
I have a hard time counting the move to ~1550 CNY as a 3 waver - looks more like 5 to me.
Imo it looks much better as 3 waves, though chessnut also mentioned earlier he thought it was 5, so what do I know. Perhaps bit clearer form on OKUSD:

Blowout v of (a) ((following underextended iii)) and severely overextended iii of (c) followed by a weak and truncated v.
The ratio between (a) and (c) pictured is also almost exactly 1:1, i.e. typical corrective proportion.