"The three girls were a bit shy at first. But they soon relaxed and giggled sometimes while recalling the interesting moments with their grandfather. You can really sense the family's affection and connection."

The director was particularly impressed by a moment during Yuan's 90th birthday celebration, which was attended by hundreds of people.

Yuan cut the first piece of cake and immediately gave his wife the first bite.

Despite his hectic schedule, Yuan has developed an "exercise program" to train his brain.

He plays mahjong with friends for an hour at 8 pm every evening. And like ordinary Chinese, he laughs when he wins and doesn't hide his disappointment when he loses.