You can visit Kat Hing Wai and Lo Wai, villages with their walls still intact.
While Kat Hing Wai has intact walls, the village of Lo Wai does not.
mnli hypothesis: While Kat Hing Wai has intact walls, the village of Lo Wai does not. premise: You can visit Kat Hing Wai and Lo Wai, villages with their walls still intact.