My guess is more of a school things
Marketing to parents on how they can teach your kids to be filial to the parents

Plus I see this as a one of ceremony
A tradition since from the start of the school, I guess

Ktards all so guarded their feeling..

Wan to take up my challenge to u?
Kow tow and bow to your mom and tell her heartfeltfully that u love her and appreciates her efforts to raise u all these while.

- see what feelings or emotions that comes up to u?
Then see your mom's reaction. Most probably she almost wan to shed tears too.

Try la. No harm done if there is nothing but if it does u good, it will be 1000x do good for your relationship with your parents.

I was exactly like ktards 2 years ago. Dont believe in this thing, thinks its lame, etc.

Then i did it. Washed my dad's feet and tell him i love him. I cry i tell u. Even my dad wan cry d but he very very traditional so just looked away.

my grand father told me this is how his generation of people did

but then we modernise and stop doing this

I felt stuck in my life, so i went to a training course which i paid myself. Ppl say its a cult and whatnot, but im thinking even if its a cult, so be it. As long as it improve my life. And one of the actions needed in the course was to show appreciation like this to your parents.
Heck it turns around my relationship with my dad and bro leaps and bounds.
From not wanting to meet my bro at all and always fighting when meet, to now able to talk n sharing things and talking about what we wanted in the future.
N my dad from i couldnt even say i love u to him, to now being able to say it and show it. Same as to him too, now he always says it too.