Ua lanakila ʻo ia i ka Shanghai Patent Pilot Unit a ua ʻoi aku ma mua o 40 mau papahana waiwai naʻauao nona iho, e hana ana i kahi ʻōnaehana patent me nā ʻano Huzhen a lilo i kākoʻo ikaika no nā ʻoihana ʻenehana.