My son also wrote "My brother likes surfing" in his ws. He told me surfing means "滑浪". Your daughter's explanation is more updated.
Thanks to let me learn more
I think I am too absent-minded indeed. I have clarified with my daughter just now.
You know, yesterday evening, My son wrote "My mother likes surfing the net".
I asked him what is the meaning of "surfing the net".
He said that it means 上網.
I asked why you knew the word.
He said that he asked his sister.
And then I confirmed with his sister and she confirmed it is correct.
And then I read a note on the table and saw that there was written "my ??? likes surfing" only without "the net",
then I ask my son to erase the "the net".
I think the single word of "surfing" means 滑浪, and "surfing the net" means 上網.
I hope the teacher will not ask me to monstrate how to do surfing