A spiritual duplicate created by Shenhe (Genshin Impact) from Genshin Impact. Its form mostly resembles Shenhe herself, except colored light blue all over. It has an ofuda on its head and a Trigram symbol on its stomach, specifically the trigram ☵, Water.
The spirit is counted as an independent being for the purposes of Solo, 1girl, 2girls, 3girls, etc. tags. So a picture of Shenhe and her spirit with no one else should be tagged 2girls and not Solo.