Overview
Yanfei generates Scarlet Seals on normal attack hits (max 3). Each seal reduces charged attack stamina cost and increases charged attack damage. Her burst creates additional seals and buffs charged attack AoE. Build CRIT and Pyro DMG for charged attack damage.
How to Play
Use normal attacks to build Scarlet Seals (3 max), then release charged attacks. With C1, charged attacks cost no stamina at 3 seals. Use burst for instant seals and AoE buff. Yanfei needs shielding, Zhongli or Xingqiu damage reduction prevents interruption during charged attacks.
Optimal Rotation
Xingqiu Skill/Burst, Bennett Burst, Yanfei Burst, Yanfei NA ×3 (build seals), Yanfei Charged Attack, repeat. With 3 seals and C1, spam charged attacks without stamina concern.
F2P Options
Solar Pearl or The Widsith work well. Yanfei is a 4★ from Liyue, C1 is a huge QoL upgrade for stamina-free charged attacks. Crimson Witch is farmable. Pair with free Xingqiu for Vaporize damage.
Common Mistakes
Charged attacking without Scarlet Seals wastes stamina and damage. Not using burst before charged attack spam, burst provides seals and AoE buff. Running without shielding, Yanfei gets interrupted constantly. Building EM over CRIT unless in specific reaction teams.