A white butterfly

On this sunny Sunday, I have nothing to do outside and am just relaxing on the porch while sitting, and coincidentally, in front of my garden, there are several flowers that have bloomed, and usually several species of these small insects often suck the nectar from these flowers in my garden.
And then I accidentally saw a butterfly species crawling on one of these flowers. And perhaps this butterfly species was sucking the nectar from this flower, so I immediately approached it to get a closer look at this butterfly species