geezer,
the characters used are:
秘笈
Bei3 Kap1
It literallly means "secret book/manuscript" and is understood that way in a gong fu context.
However, it is used more colloqially to express things like "the secret" or "trick to" doing something well or the right way is...
So a bei kap might be a very important detail about how a technique is executed or applied.
The Kap1 you are referring to - to cover sth with a lid, f.ex. - is 扱, so even though the pronunciation is identical, the meaning is totally different.
the characters used are:
秘笈
Bei3 Kap1
It literallly means "secret book/manuscript" and is understood that way in a gong fu context.
However, it is used more colloqially to express things like "the secret" or "trick to" doing something well or the right way is...
So a bei kap might be a very important detail about how a technique is executed or applied.
The Kap1 you are referring to - to cover sth with a lid, f.ex. - is 扱, so even though the pronunciation is identical, the meaning is totally different.