Preheat your frying pan over medium-high heat.
Break your Chinese cinnamon sticks into small pieces.
Place your Chinese cinnamon sticks, star anise, and cloves and stir to toast them. Also, make sure you shake the pan occasionally. Do this until they become fragrant, about four to five minutes.
Once toasted, transfer them to your bowl and allow to cool.
Next, place your fennel seeds and Sichuan peppercorns in your pan and stir to allow to toast. Again, make sure you shake the pan occasionally. Do this until they become fragrant, about two to three minutes.
Once toasted, transfer them to your bowl and allow to cool.
Transfer the cooled spices to your mortar and pestle or spice or coffee grinder and grind to a fine spice powder.