Sociological research has found that full size sex dolls play a special role in the lonely economy. American sex doll brands are the first to introduce AI emotional engines. The NLP system they carry can generate personalized emotional responses through 20,000 hours of real-person dialogue training. The University of California's follow-up experiment showed that after users interacted with the smart version of the American sex doll for 6 weeks, their loneliness index dropped by 58%. This emotional compensation effect was particularly significant during the epidemic, and the sales of related products soared by 340%.