What does 20 mean? What does Crash Landing on You mean?

Recently, some netizens were watching "Crash Landing on You" and didn't quite understand what the male and female protagonists meant when they said "20" at the same time. What was the meaning of this? In fact, Hyun Bin and Son Ye Jin said "20" in a tacit understanding during an interview, which made netizens feel the tacit understanding and sweetness, so some people are talking about the 20.

What does 20 units mean?

A little-known fact is that more than half of the districts in Seoul have TVN numbers 20, with a probability of at least 60%, which is no longer a coincidence. On the other hand, I don't think Mary Park is that idle, so there's no need to imagine too much.

What is the plot of Crash Landing on You 20?

In an interview, the host said that his TVN is channel 17, and asked the male and female protagonists what channel it is. The two looked at each other and said 20 in unison. Host: Yeah, you two are the same.

Watch link: https://www.bilibili.com/video/av80574416/?p=2

My thoughts after watching episode 14

1. He He should not have been shot. Judging from his expression while sitting in the taxi, he knew that the NIS car was following him. I think he might have deliberately led them to get rid of Zhao Truck. The business card given by Lily's mother should be a foreshadowing. I guess the male protagonist may have greeted Lily's mother in advance and colluded with her. I feel that the action must have been done through connections.