The author started the story by describing the two nipa houses. But if you go back to his introduction after reading the story, you would realize that these adjectives were pertaining to the two main characters, Aling Biang and Aling Sebia.
" They were two separate worlds, two opposing planets so near together that their repulsion had become stifled, and its repression become more envenomed. And yet but a yard of parched soil separated them, a yard of brittle-crusted earth with only a stray weed or two to show there was life still thriving in its bosom." Words from this paragraph maybe too far to explain the character's feelings but it actually did. The author chose to compare the lead characters of his story to two opposing worlds that bounce away from each other resulting to this awkward distance between them.
"--windows as desolate as the soul of the occupants of the house, as sharply angular as the intensity of their hatred." This clearly shows how each of the two characters treat each other. Cold, distant, deserted and empty.
By this time the author already catched the attention of the readers. Here, he starts to narrate why the FENCE was built. Aling Biang built the fence from hatred because she caught her husband with Aling Sebia and now she wants to protect her "properties" away from the "thief". Aling Sebia on the other hand built the other half of the fence from hurt out of Aling Biang's offensive and cold words to her. The author made use of the fence as the anger they both have for each other that is why the fence was built by BOTH of them, because aside from the fence they literally built, there is also the great hatred exerted by both their hearts like a barrier that keeps the two of them from forgiving each other.
The characteristics of their children may have also been the results of the quarrel between them. The hatred went on like a curse as their children grew to be sickly and ugly.
The author even used ironies like