With the premise 'For example, even at age 2, they waited patiently to open a small gift until a guest had departed'proper etiquette in Chinese culture.', is 'They waited to open a small gift when they were very small.' simply an unrelated statement?
For example, even at age 2, they waited patiently to open a small gift until a guest had departed'proper etiquette in Chinese culture.###They waited to open a small gift when they were very small.