The name of a Chinese street food crepe filled with egg and sauce is jianbing.
Jianbing is a popular Chinese street breakfast made by spreading a grain-based batter over a hot griddle, adding an egg, and finishing it with sauces and savory fillings. Vendors may use wheat, millet, mung bean or other grain flours. Common additions include scallions, coriander, pickles, chili sauce, sweet bean sauce, crispy crackers or youtiao, a fried dough stick.
The dish is associated historically with Shandong and later became especially prominent in Tianjin. Tianjin-style jianbing guozi is a well-known regional form, typically made with mung bean batter and a crunchy fried filling. Jianbing itself is a broader category, so recipes and textures vary widely from one city or vendor to another.
It is often confused with a French crêpe because both are thin griddled foods, but jianbing is usually savory, assembled directly on the hotplate and folded several times around sauces and fillings. Dumplings, baozi and cong you bing are different Chinese foods with distinct doughs and cooking methods.