Nine in the fourth place means

Bites on dried gristly meat.

Receives metal arrows.

It furthers one to be mindful of difficulties

And to be persevering.

Good fortune.

There are great obstacles to be overcome, powerful opponents are to be punished. Though this is arduous, the effort succeeds. But it is necessary to be hard as metal and straight as an arrow to surmount the difficulties. If one knows these difficulties and remains persevering, he attains good fortune. The difficult task is achieved in the end.