This build focuses primarily on Xinyan's Physical DMG as an On-Field DPS. At [C2], Xinyan can build a 1:3 CRIT Rate : CRIT DMG ratio instead of the usual 1:2 CRIT Rate : CRIT DMG ratio.
Regarding Weapon Choices:
Serpent Spine: At [R5], this weapon performs better than .
The Unforged: This ranking is based on unshielded performance. While shielded, this weapon performs better than low-refinement .
Prototype Archaic: At [R5], this weapon performs better than [R5].
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Indicates important notes at the bottom of the page.
This section is dedicated to using Xinyan as a shielder for her team.
Xinyan's Skill grants you a Pyro status upon contact with the shield. No matter how many times you switch characters, it will still apply Pyro every time you switch while shielded. This allows you to cleanse most elemental statuses that have been applied to you.
Shield uptime is also crucial to maximizing her Physical/Shield Support capabilities. If you have neither nor at least [C2] (ideally [C4]) on Xinyan, you may want to build her as a DPS instead of Physical/Shield Support.
Generally not recommended for Pyro applications, as the pulses only happen at Shield Level 3 and are not very efficient at breaking Cryo shields.
Regarding Artifact Choices:
Sets
Tenacity of the Millelith (4): If you can maximize the uptime of Xinyan's Level 3 shield, she can provide a constant 30% Shield Strength and 20% ATK% boost to the team, as long as the pulses hit an enemy. This means that and Xinyan's [C2] are crucial to making this set shine on her. This set is not as recommended for her if you have neither of the two.