Any problem bringing the drone into the airplane [hand baggage].
I like to go to Malaysia, Hong Kong, China and vietnam.
Anybody can advise.

regards

Hi, mostly, for taking the drone to the airplane, it will vary from the airline companies, so you can seek advice from the airline company you are going to take.
And I would like to suggest that you can search the drone regulations of the countries that you are going to, please click the link for further info: http://www.dji.com/flysafe