After a life of not much variety one feels that things have stagnated and there is a need for a change. Another aspect is making a break with the past; getting a feeling of achievement in a strange environment is a way of reaffirming one's self again. In the past, foreign study was tough.
一成不變的日子過久了，覺得生活被定型，需要變化；另一方面是為了和以往的方便性切斷，從陌生環境中印證成就感，再一次肯定自我。