"heartless chicken"; a "pink slip". 15 days before the Lunar New Year, if the boss gave an employee a chicken leg at the last official dinner banquet for the year it meant the employee was being dismissed.

a pink slip (historically, at the last official dinner banquet before Chinese New Year, if the boss gives an employee a piece of chicken it is a hint that he / she will soon receive a letter of dismissal)

to get fired; to have received a pink slip; to receive marching orders