What is the yellow meniscus in Shenyuan game?

Fragile resin. According to the information of Genshin Impact official website, the yellow crescent in this game is a prop, which is obtained through travel, upgrade, activities and shopping malls. It is called brittle resin. Shen Yuan is an open-world adventure game, produced and distributed by Shanghai Mihayou Network Technology Co., Ltd., in which players will play the role of mysterious "travelers" and defeat powerful enemies with various companions with different personalities and unique abilities.