1. Turn on the oven and preheat it to 250 degrees Celsius.

2. Turn off the power switch of the oven, hang the shaped roast chicken in the oven, and close the oven door;

3. Turn on the power switch of the oven and bake for 7 minutes when the temperature rises to 120 degrees Celsius;

4. Open the vent, close the vent after 5 minutes, let the moisture and oil fume out of the oven, and then take out the roast chicken.