1. Preparation: 

Clean the small tubes, remove the cartilage, drain the water and set aside; Wash the asparagus, cut the onion into strips and set aside;

2. Frying: 

Prepare a suitable frying pan, fill it with cold oil in a cold pan. When the oil is hot, put the small tubes in and fry for 1-2 minutes. Then move the small tubes to one side of the pan, and put the asparagus and onion in. Immediately pour in an appropriate amount of white wine, cover the pan and simmer for 1-2 minutes before removing from the heat.