Dear Master Lee, Since I have a little knowledge and I know well about "a little knowledge is a dangerous thing" I would like here to ask carefully to you about your following answer. Cecil L. wrote: 5. Another type of Yin has to do with Flying Star numbers. For example Flying star numbers 1, 3, 5, 7 are yin stars and a high concentration of such stars on it's own is no issue. But if coupled by too yina sector or I have read in some postings about Yin YangNumbers (see below)and I am really confused whether 1, 3, 5, 7 are Yin or Yang. Please give me an explanation. Thank you in advance. --- 10. Under the Yin and Yang concept, anything that is even number e.g. 2, 4, 6, 8 etc.. is considered yin. While 1, 3, 5, 7 or any odd number is considered yang. --- It follows the same principles for all even numbers are considered (yin) and all odd numbers are considered (yang). This means that 2, 4, 6, 8 are yin, and 1, 3, 5, 7, 9 are yang. This theory is applied to all I-Ching, Flying Star and anything to do with number theory. Warmest Regards Robert Lee ---