How to remove rust stains on clothes?

Edited and translated by Du Mingming, People's Daily Online

Following are two ways to remove rust stains on clothes:

1. Apply 2 percent oxalic acid solution to the rust stain area. Pour some warm water at 50 degrees Celsius into a basin. Soak the clothes into the water. Scrub the stain with a brush to lift the stain. Rinse the area thoroughly with cool water.