Literature Reference: If the Right Minister can govern the country and harmonize yin and yang, even if the official ox's collar is worn out, it does not matter. From 'New Yuefu: The Official Ox' by Bai Juyi.
调:
Arrange and handle matters, investigate and comprehend the situation.
阴: Darkness and brightness, yin and yang. The interplay of yin and yang is the essence of the Dao.
Meaning: To harmonize yin and yang, achieving a state of balance and harmony.