"From now on, work should start before 6:00 am and finish after 10:00 am, and a bell should be rung at the start and end of work" (since the working hours of government officials were unclear, the sound of a bell let them know the start and finish time)
『今より以後、卯の始めに朝りて、巳の後に退でむ。因りて鐘を以て節とせよ』（官人たちの出士・退出時間があいまいなので、鐘で勤務時間をはっきりとさせよう）