The shang rulers in china believed that the foundation of the universe was based on the union of kun, the earth or female principle, with what symbolic element called qian?

The answer is heaven. Qian signifies the peak of our mortal potential, a state of mind of clearness and consistency, uninterrupted by doubts, needs, supposed loops. When our attention is clear, if we are concurrently one with ourselves and with our goal, we turn out to be with the creator.