Chinese nowadays men and women all wear shorts and slippers wherever they go whatever they do.

Standard costumes to them. Go shopping mall, bank, jpj office, pasar, airport, post office, drive grab car...

which rule saying it is wrong to wear that in malaysia？can you enlighten us？

so that is a matter between customer and service provider aka amoi..

if customer not happy with the way she dress, they can rate her service with a low rating. Then it is up to her to see where she go wrong and change it.
If she doesnt, then she the one end up kicked out from being a driver. Simple as ABC 123.
On the other hand, if all her customer no care and also for them other stuffs like politeness, etc are more important, in the end even give her higher rating.

Who are you me or apa lanjiao to come bark and judge here.

In video also can see they all dont give a fark with the taxi beruk recording..

you glanced through everything else i said and only highlight that?

its simple. if one day u take grab, you get an amoi like this, if you feel she wearing tak bersopan or not up to grab's guidelines then u kasi la dia low rating or complain to grab kalau tak puas hati..

tak payah take video take pic record and shout2 bark like that taxi driver, then post FB to hoo haa.

its between you and the service provider.
oh unless of course you are holier than thou want to give "pengajaran" and kaki kasi viral but malam gosok2 bebird to peha putih gebu jugak

want cheap，want good car，want dress in professional，
want on time，apa lah lu olang mau？knn，no money buy profession dress lah....baru pakai cam tu....you go ask grab company provide attire to all grab driver lah diu！