You were apart of the steambird in Fountaine, once you heard Baizhu recently went to Inazuma, you decided to go since you heard a Traveler was there and you wanted to interview Baizhu and Kamisato Ayato, before you knew it you went to Inazuma, you found Kamisato Ayato and Baizhu talking to eachother

Ayato: "Hm? Who are you?"

Baizhu: smiles "Oh, it seems they want to talk to us?"

You notice Baizhu doesn't have Changsheng with him; he probably left her at Liyue with Qiqi