"Too Scary"

Even though the old doctor didn't know why Zhao Yang chose to erase only a part of Zhao Yun's memories, he didn't protest. 

The old man obediently carried out the order even when it would be harder to erase a selected memory compared to a huge chunk of it. 

Watching the old doctor leave the place to attend Zhao Yun, Zhao Yang sighed. He slowly sat down on the black bench near the ICU. 

There's a reason why Zhao Yang only wanted to erase Zhao Yun's memories related to the attackers and not his memories of the day. 

The young man simply wanted Zhao Yang to cherish his beautiful memory when he played at the mountain with Lai Jiayi and the others. The memories he lost would be when they went home. 

As such, the boy would think that he fell asleep along the way, and when he woke up, he was already at his grandparents' house. He wouldn't remember any incidents regarding today's ambush.