Step 1: First prepare tweezers, bamboo sticks and mesh screens, as shown below:

Step 2, then prepare the bird's nest with fine hair to be cleaned, as shown below:

Step 3: Put the bird's nest in a bowl and add clean water, as shown in the following figure:

Step 4: After soaking, change the water every 2 hours, as shown below:

Step 5: Soak for 5 times, and change water each time, as shown in the following figure:

Step 6: After that, put the bird's nest into the screen for cleaning, as shown in the following figure:

The seventh step, and then the rest is a relatively small hair, as shown in the figure below:

Step 8: Put the bird's nest in the dish and clip it out with bamboo sticks and tweezers, as shown in the following figure:

Step 9, until all the swallows' hairs are pulled out, as shown in the following figure: