How do Cao brothers and sisters get their names?

Cao Yuxi (white marble steps, the meaning of wealth and promotion) Cao Yuxi (the throne; Palace, the meaning of great honor) Cao Yuyan (the inkstone of jade is moist as jade, which means literary talent) Cao Yuxi (the book of jade ornaments, which also means literary talent and knowledge) Cao Cao Yuqi (both of them are related to the piano, moist as jade, and familiar with vocal music) Cao (from Mencius' Masterpiece)