Dong CanSiming and Xi Siming open a shop together?

Dong Siming and Xi Siming cannot open a shop together.

People with four lives in the east are suitable for sitting south to north, while people with four lives in the west are suitable for sitting north to south. The two are just the opposite, and it is not suitable to open a shop together. For the record, this answer is for reference only. Please don't be blind and superstitious.