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What do you mean by punching in?
The explanation of ringing the bell

See "Bell". (1). Ring the bell. Book of Rites: "Be kind to the questioner, like ringing a bell. The small one will ring, and the big one will ring. " "Answering a guest is difficult" is written by Han Dongfang: "It means: how can you see the sky with a tube, measure the sea with a pot, strike a bell with a pot, test its communication, and make it sound!" Clock, one is called "clock". Yuan's "backyard flower" has the first discount: "What were you doing there when the bell rang?" (2) Name of the instrument. One of the percussion instruments of China traditional opera. Huang Er, the villain in Beijing Opera, is often used to accompany the applause when entering the door.

Word decomposition

Explanation of bump: bump, bump, bump: bump the clock. Collapse. Hit. Objection. Collision. Meet by chance. Test: Hit a lucky luck (take a chance). Touch your head: hey; The bell (1 bell, 3 bells, 4 bells, 8 bells) is not a sound generator made of metal, it is hollow, and it rings when you knock it: it is an alarm bell. Chimes (ancient musical instruments. A series of bronze bells were hung on the wooden frame and struck with mallets. Different times have different shapes and sizes, and the number of flowers is also different. Zhong Ding (the general name for ancient bronzes with inscriptions on them).