Shenzhen-Hong Kong Stock Connect
Shenzhen-Hong Kong Stock Connect (SEHKSZSE) (Chinese: 深港通) is a cross-boundary investment channel that connects the Shenzhen Stock Exchange and the Hong Kong Stock Exchange. Under the program, investors in each market are able to trade shares on the other market using their local brokers and clearing houses.
Source: Wikipedia — Shenzhen-Hong Kong Stock Connect (CC BY-SA 4.0)