Could you please recommend me an interesting place to see?
Any preferences in location or types?
Yes, I prefer Museums close to Islands District
I can recommend you Aviation Discovery Centre at Shop 061, Level 6, Sky Plaza, Hong Kong International Airport with phone number +852 3559 1070 and rating 8 from 10.
And can i get there from Mong Kok East by MTR?
Sure, Take the cyan line of the Mong Kok East station.Then change at Exhibition station from cyan line to purple line.Then change at Tamar station from purple line to orange line.Get off the train at Tung Chung East station.
What about time and price?
It will take you just  33 mins for trip and about 13.08 HKD for tickets.
Ok, that's it. Thank you. Bye.
Have a nice day. Bye.