What do you mean?

Nine cows and two tigers are really the ones made of powder in the story. This story is a local legend, but in my impression, it seems to have nothing to do with Xue Pinggui. Perhaps this story was later extended to other famous celebrities.

The story I found is that agarwood saved her mother and met Lv Zu:

"(a brief introduction), agarwood was filled with joy when he heard this, and hurried forward to bow down to the master. From then on, he studied under Lv Zu. He gets up early and is greedy for the dark every day, studies and practices hard, and is proficient in 18 kinds of martial arts. One day, Lv Zu went out and told Chen Xiang to study hard at home. Aquilaria closes the temple gate, dances with guns and sticks, and practices hard. At dinner, Master didn't come back, so he practiced again. I practiced until the sun went down and I was so hungry that I went to the kitchen to cook. When he entered the kitchen, he found nine cows and two tigers made of flour in the cage. He felt a little strange, but his hunger was unbearable. He ate all the cows and tigers without much consideration, and immediately felt extremely powerful. When I came to the hospital, I picked up the usual weapons, but I didn't want to make a move. He looked around and saw an iron pestle with a thick bowl and eight feet long in the corner. He grabbed it with his hand and waved it. Just then, Lv Zu came back. He smiled and said, "All right! Ok! " Aquilaria put away the iron pestle and knelt down. Lv Zu said to him, "When you learn martial arts, you can go up the mountain to save your mother.

So it means to describe great power, but because there are clear story allusions, the numbers in idioms can't be regarded as function words or most participles.