Starting from 'For example, even at age 2, they waited patiently to open a small gift until a guest had departed'proper etiquette in Chinese culture.', does it naturally lead to the conclusion 'They waited to open a small gift when they were very small.'
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.