I presume all three shots are of one individual, since 1 & 3 seem to be on the same leaf.
From the underside pic2, the veins seem lightly darkened & so this might have been dismissed as P. omaha.
But it looks rather large & on the HW (pic 2) spot 6 (2nd from the top ) is rather large .
In pic 3, two features are distinct.
1. The FW band on the left have continuous overlaps without any break.
2. The Upperside HW do not have the veins darkened.
From this combination of features only two species are possible.
I will put it as the female Potanthus confucius mainly because P. pava is supposedly found only in northern Malaya.
There is a nagging suspicion whether this can be P. pava because HW spot 6 is large on the upperside.
P. pava is a larger species (roughly = P. serina ) the FW band is broader & the HW spot 6 is alway large.