Two hands placed firmly together, meaning please or thank you in Japanese culture. A common alternative use for this emoji is for prayer, using the same gesture as praying hands. It can also represent a respectful greeting or show of adoration many in Southeast Asian religions and cultures, such as the Hindu namaste or Buddhist añjali mudra.
Rarely used as a high-five, despite often being suggested as one by emoji keyboard search features
https://emojipedia.org/folded-hands
應該大部分人都會當呢個係唔改/合十,當擊掌嗰啲可以歸入少數

