Eastern men emphasize the "family continuation" function of the granny sex doll: 38% of Japanese users set up ancestral altars for them, and Chinese users are keen to customize dialect systems. Westerners focus on individual healing (72% use them for psychotherapy). Cultural barriers are reflected in touch preferences: Asia requires a skin temperature of 35°C (symbolizing vitality), while Europe and the United States set it at 37°C (close to hospice care). The global design convergence rate of the torso sex doll is 89%.