Qiyana vs Xin Zhao

Pick your Terrashape (W) element for the job: river for an Ice root, terrain for Rock's bonus damage on low-health targets, brush for Wild's invisibility.

Cast Terrashape (W) right after Elemental Wrath (Q): the dash resets its cooldown, so you can recast it in the same combo.

Cast Supreme Display of Talent (R) toward a wall near the enemies: the explosion runs along the whole edge of the obstacle, and any river or brush it crosses explodes too.

Roam with Wild, the brush element: Elemental Wrath (Q) then leaves a trail that makes you invisible and speeds you up.

Get out of the line of the Wind Becomes Lightning (W) thrust: it slows you and marks you as Challenged, which extends the range of Audacious Charge (E) on you.

If you have CC, use it during Three Talon Strike (Q): without his three autos, there's no knock-up, and his other cooldowns don't go down.

After Audacious Charge (E), keep your distance: it's his only dash to get back on you, and without it he has to walk up to you.

After Crescent Guard (R), don't hit him from range: for a moment, he ignores damage from outside the swept zone. Back off, or hit him from inside it.

If you survive his first minutes, play for time: Xin Zhao is strongest early on, through his ganks and skirmishes.