Stuffed pancakes with garlic chives 韭菜盒子

A simple dough and some tasty garlic chives filling make really good stuffed pancakes or pasties. This is a classic Chinese snack called jiu chai hur zi 韭菜盒子. In Chinese it means garlic chive box, box being the pastry. This snack is one I like to make for weekend brunch, simple and filling. What is garlic chive or jiu chai 韭菜? It's a vegetable similar to spring onion (scallion) but the green '