Take Xiao Xiao and Chen Chen Out

"Chen Chen, you're back." Mother Tang greeted her grandson when she saw him at the door. She raised her head and looked at the tall man who was accompanying her grandson with a smile. "Yi Bo, come on in."

"Hmm..." Yin Yi Bo walked into the living room and noticed that Xiao Xiao was looking at him expectantly. The corner of his lips began to twitch as he thought about Tang Chen's request.

His curiosity about what the twins wanted to discuss with him heightened.

The twins were very secretive. It seemed that the matter was something that they did not want their mother or grandmother to know. 

On their way home, Yin Yi Bo tried to guess what the twins wanted to say.

He recalled that Tang Shi Yi's birthday should be coming in a few months.

Could it be that the twins wanted him to help them prepare a surprise?

Yin Yi Bo thought that this explanation might be right.

Other than this matter, what else would the twins talk about?