The Wu Lou is a must have Health Cure & Enhancer in Feng Shui.  This is a powerful symbol of Health, Vitality and Protection.  Place by the bedside to preserve or improve Health.  Everyone should have one by their bedside or where annual illness stars are in your natal chart/annual flying stars. Lasts for a years, cleanse every year as well (run under water and smudge with incense, can charge under a full moon as well).