HARBIN, Feb. 7 (Xinhua) -- Inside a sprawling souvenir shop in the northeastern Chinese city of Harbin, the tiger mascots of ...

See? “By” originally means “bye” or byway. That’s why, in fact, some people still spell “by the by” as “by the bye”. By the way, “that is by the by or bye” in this sense (secondary) is an idiom that ...