How to make baked wheat cake alive?

The materials to be prepared in advance are: medium gluten flour 500g, boiled water 120g and cold water 100g. Specific practices are as follows:

1, prepare the ingredients needed for dough (semi-scalded noodles) first. 300g of medium gluten flour, boiled water 120g, cold water 100g, 20g of duck oil.

2. Pour the boiling water into the flour circularly to avoid the boiling water being concentrated at a fixed point. Use chopsticks or spatula to rotate and stir left and right, and stir the boiled water and flour into a loose shape.

3. Don't wait for the dough to get cold, then pour in 100g cold water.

4. After stirring into dough, cover with plastic wrap and relax at room temperature for 50 minutes.