In Genshin Impact, you’ll start out with just ... but an event in Liyue may reward Ningguang or Beidou. Either way, it’s worth paying attention to events to score some freebie characters.
The last one was a September 2024 event involving McDonald’s. Beidou and Kazuha were the featured characters for it. Genshin Impact is available for the PS4, PS5, PC, and mobile devices.