Question

水過鴨背 séui gwo ngaap bui

Accepted Answer

(water off a duck's back)/to make no impression on (the memory), to forget (e.g. a lesson) y

Expression	水過鴨背
Meaning	(water off a duck's back)/to make no impression on (the memory), to forget (e.g. a lesson)
Reading	séui gwo ngaap bui
Recall	y

水過鴨背 Water Duck's Back)/To Make Impression Memory Forget