According to legend, Zhou Wenwang's parents died early when he was young, and he was always raised by his brother and sister-in-law. On one occasion, Zhou Wenwang led an army to meet with pouring rain in the war, and the wind was biting. After taking hundreds of medicines, it didn't get better, and I stayed in bed for a few days.

Sister-in-law herself went down to the cupboard and made a bowl of hot noodles for King Wen, who was sweating profusely and refreshed. Later, in order to commemorate her sister-in-law, she named it "Sister-in-law Noodles". Shampoo noodles are also called "sister-in-law noodles" or "whistle noodles", which may be homophonic.