Besides N.bicalcarata, I also found some interesting natural hybrids and other species  of nepenthes. Among them; N.gracillis, N. ampullaria and etc…

N. mirabilis var enchinostoma with weird looking peristome.

N. ampullaria, kinda big pitchers I found.

Nepenthes x cantleyi natural hybrid between N. gracillis and N. bicalcarata.

Now, the most interesting hybrid of the trip is the below pictures, I certainly found N. reinwardtiana gene in the specimens by looking at it hence my best guess is Nepenthes ×cantleyi × reinwardtiana.