Chang figures that the reason for the limited growth of the clinic's model so far is that domestic tourism is mostly of the two-days-one-night or three-days-two-nights model, which is too short. This is quite different from overseas travelers going to Phuket for a week to 15 days of R & R, so there isn't ample time for arranging beauty and skincare itineraries.
張積光分析恆醫模式迄今成長有限的原因，在於國內旅遊以兩天一夜或三天兩夜居多，時間太短，這與國外遊客到東南亞普吉島定點停留 7 至 15 天的休閒渡假風氣很不同，因此沒有充裕時間安排美容護膚行程。