What is Su Beichen?

The Soviet Union was called "Brother Chen" by China in the honeymoon period of the Soviet Union, which means "Beichen" or "Polaris" to reflect the leading role of the Soviet Union in China on the socialist road, that is, the title of "Big Brother" is more elegant.

So the name "Su Beichen" was derived (hhh is like a romance novel), which refers to the Soviet Union, and refers to the Soviet Union that points the way like the North Star.

It is worth mentioning that, because the Soviet Union didn't know the name very well, it was later cancelled and only called Big Brother.