Why to say special hiding the crest of type of a

Why do you saySpecial dun armourThe crest of type

Special dun armour is a master of ancient Chinese type is about predicting a number.Special dun armour and ancient astronomy, calendar, there is a close relationship, it put the ancient Chinese Yin and Yang, five elements, air-dried, gan, and suggests that elements are included in, form a complete organism, so it is a type of special dun armour.

Why is special dun armour crest type of relevant content

The duke of zhou interprets of query