A person in Genshin Impact, also a part-time River God

Intro: Synopsis: Feng Yi, bearing the inheritance of the River God, traveled to Teyvat. Before he could even rejoice, he discovered he had been buried alive by Hu Tao! "Young Hu Tao, did you drop this golden pair of briefs, or this silver pair of briefs, or this ordinary pair of briefs still warm and imprinted with floral patterns?"