Take the certificate and go to the tax hall to open it. Individuals in Shaanxi province can open tax-free invoices on their behalf with certificates in the tax hall. Shaanxi, referred to as "Shaanxi" or "Qin" for short, is a provincial administrative region of the People's Republic of China, with the capital of Xi 'an, located in the hinterland of China, in the middle reaches of the Yellow River, bordering Shanxi and Henan in the east, Ningxia and Gansu in the west, Sichuan, Chongqing and Hubei in the south and Inner Mongolia in the north.