Thank you for the query.
Generally liquids quickly pass the stomach and you can feel it goes directly to the intestines. It can work that way. Its because there is not much to digest if it is about the liquids. Moreover, liquids can flow freely with the gravity.Belching
after drinking can be caused by swallowing to much air. This is called an aerophagia
. Can be caused by drinking carbonated drinks, drinking too fast, chewing gum, stress
As you do not have any other symptoms, I suggest you to try improve your diet first. Avoid carbonated drinks, try to drink slowly and to not swallow the air. If it wont help, you may visit gastroenterologist and consider gastroscopy.
Hope this will help.