回應:
You can say that you can have a very slight better chance by choosing stock according to your 五行喜忌。
But what I want to point out is the kind of stock also have their own luck, the kind of their section also have their own luck, the country of stock also alos have their own luck. These are the major factor, but not your own luck.
So, you better invest properly according to the market behavoiur and the compaines' own propect.
Dear adad,
Many thanks for your wise comment.
I suppose I thought they were good companies in good market(s), etc. but obviously what I thought was wrong.

Even now, I try to focus on the market + company behavior as you have rightfully pointed out. Realistically, even if I have money now, I would not put money in the same items despite deep discounts. So, I really do not know what to do. 
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自我矛盾修飾, 還是多方面測試? 看成果吧!