There are many swans out there working under cover as ugly ducklings. Some time ago I attended the annual convention of Mannatech, Inc., a research and development company that markets patented nutritional supplements along with weight loss and skin care products. During the course of the convention we were introduced to a skinny, non-descript but vivacious, feisty, young dark-haired girl by the name of Tzu-chun Lin, of Taiwan. In order to study at the university level in Taiwan, it is ne ...