Now that Z was in P2 and a whiz with addition and subtraction up to 4-digit sum, he had a great time counting money and adding all the dollars up.
On the other hand, I could see how X was as OCD as I could be. Whenever he opened a red packet, he would sort the notes by the denomination and ensured that all notes were facing the same way up and orientation.
Z was vastly differently. When Z was at the age, he was mixing up all denominations, let alone the orientation. Now that he was older, he sorted by denomination “piles”.
Both boys opened their red packets in total reverse orders too.
X worked on a stack while Z worked on a puddle.
I was really amused by their handling styles which also spoke volumes of the different handling styles of Mr H and mine.