The co-pilot rules means that people sitting next to the driver often like to point and comment on the driving process according to their own experience. It generally refers to the words, deeds or mentality of the bystander to guide others to complete the operation process based on their personal practical experience.
the co-pilot rules?
Chess is the liveliest thing in the summer civic square. Every chess table is surrounded by chess fans, and every move of the game is discussed by everyone