Clean the mugwort thoroughly and remove excess water.
Mix the flour, sugar, and baking powder in a bowl.
Add eggs, milk, and cooking oil, and mix well with a whisk.
Finely chop the mugwort and add it to the batter, mixing evenly.
Pour the batter into a baking pan and flatten it out.
Bake in a preheated oven at 180°C (356°F) for 25-30 minutes.
Let it cool, then cut into bite-sized pieces.