It is Latin dance, the most primitive derivative dance of mambo, and the most popular Latin ballroom dance in the United States in the 1950s.
It happens to be a rookie of Latin dance, which first appeared in American dance halls in the early 1950s, and developed from a dance called mambo.
The original spirit of cha-cha dance should be enthusiastic but not serious, and staccato is added to let dancers create a "naughty" atmosphere for the audience.
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Baidu encyclopedia check dance