For the difference between “same star Hua-X and Self Hua-X” and “one star Hua-X and another star Self Hua-X” in one palace , here is an example.
If we look at the Children Palace from Pregnancy point of view:
“Hua-Lu and Self Hua-Lu for the same star” at the Children Palace: Hua-Lu means will be pregnant, Self Hua-Lu means not to cherish it. And the sign of the abortion as the result — It’s by purpose.
“One star Hua-Lu and another star Self Hua-Lu” at the Children Palace: Hua-Lu means will be pregnant, but miscarriage as the result — It’s not by purpose, just can’t help.