Very basic question for the topology

Hello all,
I’m very new for modeling, just want to know how to i make that kind of corner smoother ?

many thanks

sorry i made this yesterday but forgot to post it :stuck_out_tongue: see u didnt get any other replys so here you go.

now its out… holy shit i messed up a lot…

Hey Man, that’s very awesome, i will try it today and let you know the result, the video is very nice and easy to understand.