There is an old way of forming a Karate fist that was demonstrated in Master Gichin Funakoshi's classic master text, "Karate Do Kyohan", which was presented to the Japanese Emperor in 1935, I have had this book for a few years now and this fist formation has always intrigued me.

The type of the fist shown in the book has the index finger straight (not pointing!), while the other three fingers are closed.

http://fightingarts.com/reading/article.php?id=215

This type of fist formation is rare nowadays, but seems to be practiced by certain Shotokan and Okinawan stylist karate-kai.

I am very curious to know from anyone here has encountered such a fist formation in a KUNG FU style.