From June 30, 2018 onwards, all network payment businesses accepted by payment institutions involving bank accounts will be processed through the Netlink platform.

Banks and payment institutions should complete the preparatory work related to accessing the NetLink platform and business migration before October 15, 2017.

Netlink on-line regulation of third-party payment institutions, for consumers, online and offline rate unification, perhaps lowering the clearing rate, reduce the cost of use;

Require these payment institutions to access the NetLink purpose is to cut off the third-party payment institutions directly connected to the bank's clearing model, to solve the long-standing problem of centralized management of the provision of funds. Previously, Alipay and Zaipay and other third-party payment institutions, open multiple provisioning accounts, the relationship between the complex and low transparency, in a sense, the third-party payment institutions to build their own payment clearing system, but outside the existing financial system. Not conducive to the central bank's supervision of the financial market. By accessing the Nethub, these organizations theoretically no longer enjoy dominance over the deposited funds and their revenues.

These payment institutions access to the Nethub, each transfer transaction will be recorded in the Nethub system, the central bank has the evidence to check, reducing the money laundering, bribery, tax evasion and other behaviors occurring in the platform opportunities;

Increase the central bank's supervision of the market circulation of data, access to more financial data, all the payment institutions payment clearing data will be summarized through the Nethub to the central bank.

All of the above explanations come from CCTV Finance, and I hope it will help you understand the reasons and roles.