Thousands of times of hard work is a metaphor for the exercise and test of many hard struggles. It also refers to multiple careful revisions of articles and works.

The final word is a metaphor for doing things simply and having the last word.

One shot deal means doing business only once. It often means that the price is expensive, the goods are of inferior quality, the service attitude is bad, and customers are unwilling to deal with them again.

Hitting someone with a secret hammer is a metaphor for attacking someone secretly.

The weighing weight fell into the well, just like the weighing weight fell into the well water and disappeared without a trace.

Cracking the whip, hammering the stirrup means driving the horse to run fast. Refers to a rapid march.

One thousand hammers beat the gong, and one final word is a metaphor for expressing a decisive opinion in a situation where there are different opinions.