223 House Call
Especially the eldest brother. He would have Zhao Zhitong give him mental arithmetic problems every day, and in his spare time, he would play number games in his mind.
Zhao Zhitong told him this was called a mental arithmetic game, which one could play alone in their mind during free time to become smarter.
Eventually, even the little cousins at her grandfather's house began playing this game.
With such training, it was evident that the children in the family had all grown at least a little smarter.
One day, just as Zhao Zhitong returned home from school, she received a letter from Liu Baixue. The person who had always been responsible for delivering the letters was one of Liu Baixue's bodyguards.
He was a very spirited young man, not at all arrogant, and loved to smile.
When he delivered a letter, he wouldn't leave immediately. Instead, he would wait for Zhao Zhitong to finish reading it and write her reply before he departed.
