i'm pretty sure it will be a one way transfer Poland to China!
What would you say about times when Chinese where using gunpowder to blow armies and wrote poetry on paper when our ancestors where running half naked with feathers on their butts and with sticks killing each other and trying to scribble swear-words with a stone on a rock? What was the direction of the knowledge flow then? It is not constant, my friend. We use each other's advances to make things better. Exchange of the experience is the only way to move forward :)