During the Post Covid-19 Era, the luxury brand production category have boomed in two directions, high pricing production & lower pricing production. Western markets have suffered from an economic recession because of the War and the energy tension. Luxury brands how to perform the strategies in different markets to keep the growth and make up the loss from the western markets, minimizing the negative from the mass production. Firstly, this paper talk about the ideological reasons for luxury brand expansion. After that, this paper talks about the economic reasons for luxury brand expansion: why it is so urgent to do the production turn down. Finally, this paper talks about how luxury brands growth is through product line extensions: galaxy mode product line expansion, not the pyramid mode & LV brand growth; Control create product process tightly; Pricing strategy in two directions. This paper defines the principle rarity domain of Luxury brand management. Still, cultural differences exist in Western and Eastern markets, meaning those two markets perceive the rarity principle quite differently. The two paradox discussions in social ideology, the economic perspective from different lands, have managerial implications.