2 1 class is really unusual. Two groups of four-character idioms are used as slogans.

Be at the top of the list (in a competition or debate)

Vanity Fair

[Definition] Name: ranking; Qianmao: In the Spring and Autumn Period, the state of Chu used thatch as a police flag; March with it in front of the team; As an alarm signal; Therefore, it is called "a thousand hairs". Metaphor ranking hangs in the front. More refers to an exam or contest, etc.

[Language] "Zuo Zhuan Gong Xuan Twelve Years": "No worries before."

[shape discrimination] hair; Can't write "spear"

the best

[antonym] fell on Sun Shantou.

[Usage] It has a positive meaning. Generally used as predicate and attribute.

Subject-predicate type

[Discrimination] ~ Different from "second to none": ~ refers to the front row; But not necessarily the first place; "Second to none" means first place, first place.

[Example] Xiao Zhang's children study very well; Always ~.

Top of the list