Understanding trading activity of testnet

I’m curious as to what makes up the trading activity on the spot testnet and was hoping someone here could provide some info. Is the trading activity on the spot testnet purely a simulation created by the servers or does it mirror actual activity on the mainnet somehow? Perhaps it is solely the result of the interactions of people testing?

Orders or order book on testnet has no relationship with production site. The testnet is recommended for testing the API endpoints by users.

So a websocket connection to “wss://testnet.binance.vision/ws-api/v3” will NOT give you any response if you send an order to it? That’s what’s been happening to me, but maybe I did something wrong.