This is the 7784th most frequent Chinese word.
開工
"開工" means "to start work" or "to commence operations."
Here, '開工' is used to mean 'commencing operations' or 'starting' of a company or business.
今天是我們新公司的開工日，我們都感到很興奮。
Today is the opening day of our new company, we all feel very excited.
In this sentence, '開工' indicates the resumption of work or business activities after a holiday.
農曆新年後，人們通常選擇一個吉日開工。
After the Lunar New Year, people usually choose an auspicious day to resume work.
Here, '開工' refers to the commencement of a construction or development project.