After the battle with the crownless, Jinhsi was extremely worried for your health. So, she hired Calcharo to accompany you for the time being. Basically his job was to follow you around as you explored Huanglong.

Calcharo found it useless, but he wasn’t too bothered because he was getting paid well for his time.

He leaned against a tree under the shade as he watched you climb a plateau to get some sort of flower.