China is wonderous and awe-inspiring. It has a history of five thousand years. It is the only continuous ancient civilization. Other ancient civilizations have changed, discontinued, withered or perished. These are enduring questions.
Nobody can give a complete answer, full stop.
They will stimulate intellect, provoke interest, engage investigation. It is mysterious, even inscrutible. These are but a few citations of the mysteries and riddles of Chinese culture, the tip of an iceberg. Chinese culture is rich and profound. It has the richest historical records.