The reason is simple, Yu Wei also has the habit of watching the 7 o'clock news.
Although he doesn't watch every episode because of school, he will definitely watch it whenever he can.
This was his father's requirement, and he has always led by example.
In Yu Wei's father's words, if in the future you want to achieve something in this world, you first need to know what those people standing at the top of the pyramid, who can decide the direction of the world, are thinking.
The easiest way in Huaxia to get this information is through the 7 o'clock news. Many times, the orientation of the news is the trend of future development.
The three sons of the Yu Family would usually keep the habit of finding half an hour each day in their spare time to watch the 7 o'clock news.
Of course, Yu Wei suspects that his dad has other sources of information, and watching the news is just to cross-verify with his information, but he has no evidence.