Kururunfa is an advanced kata brought back from China. It
features Tai Sabaki (evasive maneuvers) and very quick movement.
1st kanji means "a long length of time".
2nd kanji implies a sense of to remain/stay behind/detain,
(eg: inviting a friend over for dinner and not wanting him to leave, wanting
him to stay longer). Interestingly, a sense of usage of this 2nd kanji can also
be seen in a Wing Chun MA saying "lui lao (lao=2nd kanji in Cantonese)
hui soong, lut sao jik chung" (ie: "as my opponent comes in, I receive
him; as he leaves, I escort him; upon loss of contact, I charge forward")
This idea/concept of "lao" is, I believe, a common one in Chinese
MA (eg: TaiChi, Mantis), though it may be expressed/interpreted differently.
3rd kanji is translated as "suddenly", or abruptly.
4th kanji, can be "tearing"...the kanji consists
of 2 radicals, the left one meaning 'stone' and the right side meaning 'skin'
ie implying a sense of destroying, 'tearing' apart, solving a problem, or even
a sense of breaking through a defence.
When I see the 4 kanji for "Kururunfa" I see/speculate
a kata suggesting a strategy of a "yin" reception to an attack, a
sense of "sucking" the attack in, perhaps to invite an over-extension
of the attack, and then suddenly and abruptly, with devastating effect, destroy
the opponent with your own counter.