The fourth one is called Dianjun.
Detailed introduction:
Champion: The crown is a hat, which is extended to lead. In ancient China, people with outstanding military achievements, bravery and good fighting skills were named "champion generals", which means the crown of generals.
Runner-up: The runner-up is the second best, and the second is the "runner-up" after the champion.
The third runner-up: The third runner-up is named according to the season. Since each quarter has three months, the third month of each quarter is called "quarter month", so the third place is called the third runner-up.
Dianjun: Since the ancient army marched, the army responsible for the rear guard was called "Dianjun", so ""Dianjun"" was used to describe the fourth.
Originally refers to the rear when marching , later used to refer to the last place selected for competition or examination, which seems to be close to the "bottom". "Second place" means fourth place. However, many people with insufficient literary knowledge regard "second place" as the fourth place after the champion, runner-up and third runner-up (that is, the last place among the four teams that entered the semi-finals). This should be is incorrect. But as more people use it, it seems to have gradually become a customary meaning.