Personal experience is

Soak rice noodles for a while in advance

It's easy to do.

Li Guo pao ze poached rice noodles

Cool with cold water and put in a container for later use.

Bring the water to a boil in a pot.

Cook a proper amount of fat beef and take it out for later use.

Proper amount of bean sprouts and favorite vegetables

Add water to the pot and bring to a boil.

Add fat beef, bean sprouts and vegetables.

After proper seasoning and boiling,

Pour into the container of rice flour.

Add a little Chili oil

A bowl of delicious rice noodles is ready.