Your first name of Yan-Tai creates an idealistic, sensitive nature and a desire for culture and the refinements of life. You can find it difficult to express your deeper thoughts and feelings verbally. Without support and approval from others, you find it difficult to make important decisions. You are not robust because your inner tension saps your vitality. It is much more natural for you to express your deeper thoughts in writing. You appear calm to others, but at times you suffer inwardly with nervous tension. The inclination to daydream needs to be curbed as it is detrimental to mental progress. You could be subject to glandular disturbances, poor circulation, kidney or urinary tract disorders, and, later in life, prostate problems. The heart, lungs, or bronchial tubes could also be an area of potential weakness, with asthma, flu, or pleurisy ensuing. It is most important for you to establish a nutritious diet and exercise in order to build a strong, vital body.