Changli doesn’t fully buff Xiangli Yao with her Outro Skill in Wuthering Waves. However, both characters greatly rely on Jianxin to buff their Resonance Liberation, which creates a nice synergy ...
Changli is ideal for the second lead since she thrives at dealing burst Fusion DMG before you switch to another Resonator. That said, the DPS in this team don't dovetail with each other ...