When did Sheldon hold hands with his father George and his brother George Jr. for the first time in Little Sheldon?

Sheldon held his father George's hand for the first time at the age of 9, and his brother George's hand for the first time at the age of 26. As we all know, little Sheldon has a serious cleanliness addiction in his life, so he pays special attention to personal hygiene. In addition to close contact with his mother and grandmother, Sheldon is very alert to external affairs. It's hard for Sheldon to get close to things without disinfection. On this issue, we can draw the following conclusions according to the plot:

1. Sheldon's first chance to hold hands with his father appeared on the day when he was nine years old. As a genius, Sheldon entered high school like his brother George at the age of 9 because of his superior IQ. Although his IQ is superior, he suffered great setbacks on the first day of school because he stuck to the rules and questioned the authority of the teacher. Several teachers went to the principal's office to complain about Sheldon, which made father George and mother Mary very embarrassed. The headmaster informed Sheldon that he might be given a lecture. Sheldon was very sad when he first encountered setbacks, so his father enlightened Sheldon with his own experience. Sheldon felt very warm after listening to it.

2. Dad George used his family's experience of moving to Texas to enlighten the young teacher Sheldon, who was excluded because of questioning authority. After listening to his father's experience, Sheldon seems to know some ways to get along with others, and it is not easy for parents. So, at dinner, when praying before dinner, Sheldon took off his gloves for the first time and took his father's hand.

3. Little George's brother is a bohemian and freedom-loving type at home, just the opposite of Sheldon, who is meticulous in everything. In terms of personal hygiene, my brother George Jr. is more informal. The food on the table can be eaten by hand. Sheldon is very unacceptable to his brother's behavior. So every time I pray before dinner, Sheldon always wears gloves on the hand holding his brother. It was not until many years later that I held hands with my brother for the first time with hand sanitizer.