Also note that if it’s just for personal use, you don’t have to have a domain for HTTPS. You can self sign, or create your own certificate authority, you just need to clients to trust it. But domains can be cheap or even free, so it’s better to get one so you don’t have to specially configure your devices.
It’s exaggerated but yes, this map really reminds me of many large Chinese cities. It’s probably true every major city has a People’s Square. I think the map is based on Beijing.