China will implement the electronic invoice and it is expected to begin mandating companies to adopt the invoice I 2021. Since 2020 31 regions have adopted the voluntary pilot program. The program has been promoted by the China Tax Bureau (CTB). Currently paper invoicing still exists, and the adoption of e-invoicing is voluntary.
The Chinese invoicing system is called the Golden Tax System or Fapiao System. The China Tax Bureau (CTB) oversees its development.
Source Edicom