But are we all certain that is the case?
"Perceiving a victory when it is perceived by all is not the highest excellence ... For lifting an autumn down is not considered great strength, seeing the sun and the moon is not considered a sign of sharp vision, hearing thunder is not considered a sign of sensitive hearing." Sun Tzu (Chapter Four)
Because what is not obvious is actually more relevant. What is not obvious is the girl's strategy. What is not obvious is the bull's state of mind. What we don't see is what or who is behind the girl. (This is similar to our Art of War book cover with the sole piece on the chessboard surrounded by numerous opposing pieces.)
Consider another principle in The Art of War:
"In warfare, numbers may not necessarily be an advantage; do not advance aggressively." Sun Tzu (Chapter Nine)
The bull might have the "numbers," as in strength, but what good is strength if he is controlled by others?
So hopefully your viewpoint of the above photo now becomes clearer. And the lesson we can learn from it becomes clearer as well -- that no matter how seemingly formidable the problems we face, it is with this little girl's level of care and strategic thinking that we all need to employ if we want to win each and every day of our lives.