How to ask about career intentions/aspirations
Use 你長大後 (when you grow up) only when you are asking a child or teenager.
You can use 你将来 (in the future) to ask people of all ages.
&quot;想做什麼?&quot;(want to do/be what) , &quot;想當什麼?&quot; (want to be what) and &quot;想干什么&quot; (want to do/be what) can all refer to &quot;what career do you want to have?&quot;
In different context 你将来想做什麼 and 你将来想干什么 can both refer to &quot;what do you want to do in the future&quot; e.g. &quot;I want to study martial art in the future&quot;