How to Long half double crochet

Long half double crochet = Lhdc

This Lhdc is called so because you are doing a hd in the stitch below the row you would normally do the hdc in. This yarn was kinda hard to see but when working the moebius headwrap on row 3 you see the top stitches from the FPDC, you will insert hook in that go completely through both sides and finish the hdc.

I hope this made some sense.