Which son is better to sit in the east-west cemetery?

This is not credible. Geomantic omen and the location of burial sites are not fixed. This superstition was one of the methods compiled by the so-called "geomantic omen" in feudal society to gain money from others. Therefore, this superstition is not credible. Whether children and grandchildren are good or not depends on their own efforts. As the old saying goes, children and grandchildren have their own children and grandchildren.