You have been given GREAT advice here.
Having lived and worked in some two dozen countries around the world, I can tell you that, "nothing goes to weather
like a 747."
And...having had quite a few boats and cruised and lived aboard for some number of years, I can tell you that it is also true that, "boats float on money
SO...you are young and going to China
. Enjoy that experience and sail when and where you can. I have found a lot of sailing clubs in all sorts of tiny spots, all over the world. Most welcome other sailors. Get experience first.
At this point in your life, live as frugally as you can, and save as much as you can. Learn to invest and start a nest egg for your later life. Make a financial plan for yourself. Getting a boat at this point, especially in foreign waters...will just rob you of money
Finally, if you do want to travel, and earn an income
while doing so...I think you have found one of the FEW transferable skills. Teaching English
. There is a demand for English
teachers in nearly every country in the world. Most, if not all, will pay your way there and your living expenses. Much of my foreign travel was paid for and I can tell you, having an expense account is...VERY NICE.
Then, if you want a job you can do from anywhere you have internet
access...I have the best kept secret for you, if you have a Masters degree or above. Teaching online. Since all online universities have entry level ENG courses for their students, there is a high demand for adjunct instructors.
Save your money.
Have someone else pay for your travel.
Continue in your chosen career of teaching English.
Get a Master's degree.
Then....with some money saved and a graduate degree, you will be able to earn a living, living on your boat, anywhere.
Hope this helps