You are making me envy you. Really, a full scholarships with monthly stipends for a PhD in overseas, it can only happen to me in my dream.

Skyer,

1) It is only 4K per month. It is NOT a good job in the long run. You do not want to stay earning at that level.

2) If you are making 8K per month, it might be a good job sicne it is less likely that you will be making a lot more in the future.

Dreamer

You guys are just too great! I appreciate you guys opinion so much ... In fact, I have the intention to choose option 1, but just to get some opinion on working people whether the 4K salary is really a golden opportunity. Coz I worried I will lose such good opportunity after I completed my studies.

4K is not really a golden oppurtunity
if compared with option 1, its rather a disappointing oppurtunity

heck, ppl are paying more than 4k a month just to get to option 1.

after ur studies, 4k a month is not really a problem
like dreamer said, if its 8k a month, then u need to do some evaluation

since this is between 4k n option 1, its totally a no contest