Thanks for the reply WildChai.
Wow, sounds like you're job is more labor intensive rather than knowledge to me.
Yes, there's always a price to pay for something else. It's all about compromise.
Well, for me, I always wanted to travel, especially abroad. So for a job, I look for one which requires travelling to places. Honestly, I've never boarded a plane before. The only country I have visited is Singapore since born. Therefore I'm a guy who look for opportunity to travel.
I'm quite young still, no commitment and still fill with energy. I guess you're the same

So doing this job for around 5 years, you would have save enough and you can live a stable live when you enter the management level with your experience. You might even be able to start up your own business too

Congrats to you. Wish you all the best in your job.