What does outsourcing mean? Is it the dispatching system?

Subcontractors are generally not formally established by banks, but only staff employed by banks when outsourcing their business in a specific business field (generally in the form of recruitment by third-party companies).

It is banks that provide services to banks through third-party companies.

For example, the Chengdu Credit Card Center of Shenzhen Development Bank is recruiting people.

Chengdu Credit Card Center This is a third-party company that does not belong to the bank.

So it can't be regarded as a bank's dispatching system.