In the eye of ancient Chinese, one, three, five, seven and nine are numbers of Yang, while two, four, six and eight are numbers of Yin. If both of the numbers of the day and the month are Yang numbers, such as 01/01, 03/03, 05/05, 07/07, 09/09; it leads to an imbalance of Yin and Yang. With constant worship for Yin-Yang balance, in those days, therefore, people would __. 答案: take a bath; drive off bad luck; offer sacrifices to gods; pray for good luck