This is an innovative baked delicacy that features a uniquely structured酥皮 (crispy layered crust) enclosing two distinct fillings arranged side-by-side in separate compartments, often revealed when the pastry is split open. Typically, one side contains a rich, creamy savory filling such as salted egg yolk or cheese, while the other holds a sweet flowing center like chocolate ganache or custard. This design creates a striking visual contrast and delivers a balanced sweet-and-salty taste experience in each bite. The pastry requires precise temperature control during baking to maintain the酥皮's flakiness while ensuring both fillings achieve ideal texture—one creamy and the other smoothly molten. Popular as a gourmet snack or gift, it represents a creative fusion of Eastern pastry techniques and modern flavor experimentation.